Alternatives to Roundcube

Compare Roundcube alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Roundcube in 2025. Compare features, ratings, user reviews, pricing, and more from Roundcube competitors and alternatives in order to make an informed decision for your business.

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    Greatmail

    Greatmail

    Greatmail

    Dependable cloud based email hosting with spam filtering, antivirus protection, generous storage and webmail. Compatible with Outlook and all other POP3/IMAP clients. High volume SMTP service for responsible senders. Outbound relay service for transactional messages, email marketing campaigns, newsletters and other applications. Dedicated email servers, clustering and multiple IP load balancing for high volume senders. Fixed monthly cost with unlimited sending and reputation monitoring. Greatmail is an email service provider (ESP) specializing in business class email hosting, SMTP hosting and email servers. For ISPs, application programmers and cloud developers, we also provide custom solutions including dedicated IP servers and process specific, load balanced configurations with multiple servers.
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    eM Client

    eM Client

    eM Client

    Boost your email and skyrocket your productivity with the best email client for Windows and macOS. eM Client is a fully-featured email client with a clean and easy-to-use interface. It also offers features for calendars, tasks, contacts, notes, and chat. eM Client's compatibility is unmatched. You can connect to any email service – it will work. This email client works seamlessly with Google Workspace, Office 365, Outlook, Exchange and virtually all conceivable email technologies. Integrates with Online meeting tools such as Zoom, MS Teams, Google Meet and more. eM Client enhances email communication for professionals and home users alike. It is the only email app on the market with the full support of server-side rules and search, instant message translation, "Snooze email" and “Watch for reply” features + easy to use email encryption (PGP and S/MIME). It also works perfectly with Gmail, including support for tags and signature synchronization.
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    Starting Price: $59.95 one-time fee
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    Aid4Mail

    Aid4Mail

    Fookes Software Ltd

    Aid4Mail is a fast, reliable, and highly accurate tool to collect, recover, search, and convert emails. It supports most mailbox file formats (e.g. PST, OST, OLM, mbox), IMAP accounts (e.g. Yahoo! Mail, AOL) and popular mail service providers (e.g. Microsoft 365, Exchange, Gmail). Aid4Mail can recover double-deleted messages and corrupted emails, and extract MIME data from certain types of unknown file formats through file carving. Aid4Mail provides a large array of tools to search and filter out unwanted emails during conversion. Save time by using native pre-acquisition filters to download a subset of your mail from Exchange, Office 365, Gmail and other webmail services. Use Aid4Mail’s integrated search engine to cull-down your email collection. Its search operators are very similar to Gmail and Office 365. Aid4Mail is used by Fortune 500 companies, government agencies and legal professionals around the world. It is made in Switzerland by perfectionists.
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    Horde Groupware

    Horde Groupware

    Horde Groupware

    Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks, notes, files, and bookmarks with the standards compliant components from the Horde Project. Horde Groupware bundles the separately available applications Kronolith, Turba, Nag Mnemo, Gollem, and Trean. It can be extended with any of the released Horde applications or the Horde modules that are still in development, like a bookmark manager, or a file manager. Dynamic, basic and mobile interfaces. Public and shared resources (calendars, address books, tasklists and notepads). Translated into 41 languages including right-to-left scripts and full unicode support. Customizable portal screen including applets for weather, quotes, etc. Import and export of groupware data from other applications. User preferences with global default values.
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    SOGo

    SOGo

    SOGo

    SOGo is a fully supported and trusted groupware server with a focus on scalability and open standards. SOGo is released under the GNU GPL/LGPL v2 and above. SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV, as well as Microsoft ActiveSync. SOGo is the missing component of your infrastructure; it sits in the middle of your servers to offer your users a uniform and complete interface to access their information. It has been deployed in production environments where thousands of users are involved.
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    SquirrelMail

    SquirrelMail

    SquirrelMail

    SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no JavaScript required) for maximum compatibility across browsers. It has very few requirements and is very easy to configure and install. SquirrelMail has all the functionality you would want from an email client, including strong MIME support, address books, and folder manipulation. The need arose in our organization for the access of email and address books from anywhere in the world. Obviously a web interface is ideal for this, given that the user has access to the Internet. After reviewing several open source projects we realized that we were going to need to do some fairly major customizations to get things to be a nice fit for our needs.
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    mailcow

    mailcow

    mailcow

    mailcow: dockerized is an open source groupware/email suite based on Docker. mailcow relies on many well known and long used components, which in combination result in an all around carefree email server. Each container represents a single application, connected in a bridged network.
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    MXroute

    MXroute

    MXroute

    MXroute has an excessively powerful system to ensure that your non-spam, non-marketing emails get to their destination without worrying about IP reputation. We are, quite simply, obsessed with consistent email delivery and maintaining the highest reputation among mail providers. We support the basic e-mail protocols that you expect. SMTP, IMAP, POP3. We support mail forwarding (aka aliasing), and plus addressing. We offer Afterlogic Pro (w/ CalDAV and CardDAV), Crossbox, Rainloop, and Roundcube for your choice in webmail. We offer a variety of options for obtaining support. We do expect you to understand how to use email and how to configure your DNS to use our service, but we do offer support when you need us.
    Starting Price: $15 per month
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    Plesk

    Plesk

    Plesk

    The complete set of features to build, secure and run. Everything you'll need to effortlessly build your projects, secure against vulnerabilities and automate your day-to-day tasks - on one simple dashboard. Add domains and subdomains and move them between subscriptions. Configure DNS and DNSSEC. Secure all your domains with the new SSL It! extension. Horde & RoundCube webmail on Plesk for Linux / Windows. Automatically set up Outlook & Thunderbird clients with mail auto-discover plus SNI support. Move databases between subscriptions and find out which database is linked to which website. Now with MariaDB as the database server for customer websites. You can become more productive than ever before with the all-improved File Manager, now including additional mass uploading and file search abilities. Plesk is a hosting control panel with simple and secure web server, website and web apps management tools. It is specially designed to help web professionals.
    Starting Price: $12 per month
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    Pobox

    Pobox

    Pobox

    Unlock your email identity. Pobox wants you to own your email address for life. Our useful features let you decide how email should work for you. Get an address you never have to change, at your own domain or one of ours. Mailstore is your Pobox email Inbox. It includes 50GB of storage that you can access with webmail, IMAP or POP. Our customer service specializes in solving problems, not giving you the runaround. Filter first! We can block mail, send you a push notification, and lots more, all before it hits your inbox. Spam protection isn't one size fits all. We let you customize to fit your comfort level. Our accounts have lots of flexible features, to reflect how you use email. Use Pobox to put your workflow on steroids. We can Import your Mailbox from another provider, to get started quickly. Native iOS and Android apps make the experience even better on your phone. Webmail uses our parent service Fastmail's best-in-breed mobile-friendly interface.
    Starting Price: $20 per year
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    Protectimus

    Protectimus

    Protectimus Limited

    Protectimus SAAS two-factor authentication service is already set up in the cloud and available 24/7, just register and begin the integration via API or using a ready-made integration plugin. The Protectimus On-Premise MFA platform can be deployed on the premises of your organization or in a private cloud. Radius, Citrix NetScaler and XenApp VMWare, Active Directory, LDAP, Windows Logon, and RDP, OWA, ADFS, RoundCube, Dynamic Passwords, API, SDK, customized individual development. Dynamic Strong Password Authentication integrates directly with Microsoft Active Directory (or any other user directory) to add a six-digit password onto users’ static passwords. Today, data violation happens regularly. If you want to assure your data is thoroughly protected, strong authentication methods are vital. We are likely to display personal info without any outside intervention. But when it comes to business, we would not limit user authentication and identification to a single password.
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    Starting Price: $33 per month
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    Courier

    Courier

    Double Precision, Inc.

    The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework. Individual components can be enabled or disabled at will. The Courier mail server now implements basic web-based calendaring and scheduling services integrated in the webmail module. Advanced groupware calendaring services will follow soon. The Courier mail server's source code should compile on most POSIX-based operating systems based on Linux, and BSD-derived kernels. The Courier mail server should also compile on Solaris and AIX, with some help from Sun's or IBM's freeware add-on tools for their respective operating systems. The Courier mail server evolved out of several related projects, that merged together (more on that later). The Courier mail server implements SMTP extensions for mailing list management.
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    Afterlogic Aurora
    Groupware system for businesses and providers, backed with mobile apps. Your private cloud combining groupware, file storage and email in a single, unified environment. Clean and modern interface. Can work with your existing mail server or use its own for the complete solution. iOS/Android apps for Email and Files let your users just type their email/password and never deal with mail server settings or blocked IMAP/SMTP ports. Can be integrated with LDAP authentication or LDAP address book, along with OAuth 2.0 authentication and resources, like Google Drive or Dropbox.
    Starting Price: $99.00/one-time
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    ToolsGround Email Backup Expert
    ToolsGround Email Backup Software is an all-in-one backup utility to save a backup of numerous cloud-based applications like AOL, AT&T, G Suite, Gmail, Horde, Hotmail, iCloud, Office 365, Outlook.com, Rediff, Roundcube, Yahoo, Zoho, and various others into PST, EML, EMLX, MSG, MBOX, HTML, and MHTML formats. Quick and selected backup facility using filters. ToolsGround Email Backup Software is one of the safe and accurate email backup applications that is well examined by the experts and is designed by developers by taking care of all users. With its self-explanatory interface, users can easily know how to backup cloud emails to hard drives, pen drives, computers, etc. Users can store the backup with a couple of clicks without any headache and extra efforts involvement. No loss of information and alterations with the application. The backup will also help users to access their database without login into their email clients repeatedly.
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    Spam Arrest

    Spam Arrest

    Spam Arrest

    Before using Spam Arrest, over 90% of our customers tried a spam filter on their inbox, yet spam still got through. Spam Arrest protects your mailbox from 100% of spam with a patented method for verifying relationships between you and your valued contacts, making email safe for everyone. Access your email using your favorite POP3/IMAP-compatible program (such as Outlook or Eudora), or from anywhere using our powerful webmail system. Get a new email address, as well as protect your existing mailboxes. Patented challenge, response technology blocks 100% of automated spam. Webmail allows you to access your email from any web browser, without having to install any additional software. SMTP is a standard protocol used for sending email. When you send email through the Spam Arrest SMTP server or webmail, the person you are sending email to is automatically added to your whitelist, so that they can reply to you without having to complete the verification process.
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    Migadu

    Migadu

    Migadu

    Our base offer is standards-oriented email hosting with full support for SMTP, IMAP4, POP3 as well webmail. No proprietary protocols or clients, ever. For all your needs, you get first-hand assistance from real postmasters maintaining the system. We do not outsource our support. We price email based on actual usage, not address space. It's your domain and all addresses on it are at your disposal at no extra cost. Everyone in the tech business plays the advertising card at some point. We've played ours already. No ads here ever, not even our own. Going off-line for a while? Setup a simple auto-responder so people do not expect an immediate answer. As we use standard email protocols, any standard email client with non-obsolete secure communication protocols will work. A copy of once-received messages in your Inbox can be automatically forwarded to your secondary addresses. Up to 25 of them.
    Starting Price: $9 per month
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    MacSonik Email Migrator
    Email migration is a matter of concern for many organizations and corporations. Therefore we bring you the MacSonik Email Migrator software that allows you to migrate emails from many webmail clients to other webmail clients. On the other hand, you can also save the webmail emails to other file formats supported by different email clients. This software is specially designed for Mac users because it can even export files of different email clients directly to webmail clients. This tool gives you the overall solution to migrate emails from webmail clients to other clients and file formats. So, you don't have to buy different tools for Gmail migration, Office 365 migration, Yahoo Mail migration, and Webmail migration because you can do all the tasks with just this one tool. It will help in email management and migration without any hassle.
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    Email Studio .NET
    Email Studio is an enterprise grade email and storage viewer, parser and converter. Email Studio fully supports MIME and MAPI plus generic Windows, MacOS and Linux formats. Your all-in-one (20+) multi format email and storage processor with embedded RBL, DKIM and Tracer in addition to the unmatched enterprise storage tools. ► Calendar Converter/Merger/Splitter ► Contact Converter/Merger/Splitter ► Remote Server Certificate Validator ► Email Converter/Downloader/Validator ► Email/Storage Based File Format Detector ► Send Custom POP3/IMAP4/SMTP/DNS Commands ► Storage Converter/Extractor/Merger/Splitter/Builder/Downloader
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    Zoho Mail
    Secure email hosting for your business. Host your business email on a secure, encrypted, privacy-guaranteed, and ad-free email service. Zoho Mail's data centers have top-notch security and surveillance, with a reliable 99.9% uptime. Benefit from secure email hosting that supports encryption both at rest and end-to-end, along with S/MIME message encryption. Create a domain for your business and set up custom email addresses for users. Unique and professional email addresses give your company the visibility and authenticity it deserves. Zoho Mail's powerful Control Panel is the admin's go-to place for all settings, configuration, and customization. Add users, manage group aliases, set up policies to moderate business email content, and more. Retain emails across your organization for a specified period to comply with company standards and to counter legal attacks. e-Discovery helps discover such retained emails quickly.
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    Starting Price: $2.00/month/user
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    LISTSERV

    LISTSERV

    L-Soft International

    LISTSERV is the original email list management solution brought to you by L-Soft International. Offered as an in-house software or hosted service, LISTSERV allows users to manage dozens to millions of email subscribers in one central interface. LISTSERV lists organize subscribers under one central email address so there is no need to remember subscriber information when you send an email. Simply send your message to your list's address and the message will be distributed to all of the list subscribers. Configure one-way lists for alerts and newsletters or two-way discussion lists for collaboration between organization members. Through the LISTSERV web interface, subscribers can create an account to manage their subscription settings, view previous mailings, and send emails to two-way discussion groups. Features include database connectivity, LDAP integration, and automatic bounce handling. No matter your organization's size or structure, LISTSERV can be configured to work for you.
    Starting Price: 1,000.00/year
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    Mailu

    Mailu

    Mailu

    Mailu is a simple yet full-featured mail server as a set of Docker images. It is free software (both as in free beer & as in free speech), open to suggestions and external contributions. The project aims at providing people with an easily setup, easily maintained and full-featured mail server while not shipping proprietary software nor unrelated features often found in popular groupware. Main features include: Standard email server, IMAP and IMAP+, SMTP and Submission with autoconfiguration profiles for clients Advanced email features, aliases, domain aliases, custom routing Web access, multiple Webmails and administration interface User features, aliases, auto-reply, auto-forward, fetched accounts Admin features, global admins, announcements, per-domain delegation, quotas Security, enforced TLS, DANE, MTA-STS, Letsencrypt!, outgoing DKIM, anti-virus scanner, Snuffleupagus, block malicious attachments Antispam, auto-learn, greylisting, DMARC& SPF, anti-spoofing
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    FollowUpThen

    FollowUpThen

    FollowUpThen

    FollowUpThen is a simple, flexible email address that can be used with any email system on any device. Explore below how this simple email address can boost your productivity. Experiment above as you go! How many times have you looked at the same message sitting in your inbox that you kept there just so you don't forget? Forward it to FollowUpThen instead – it will arrive back the moment you need it. Out of sight, out of mind. Inbox zero might actually be closer than you think. Become your own personal assistant and make your future-self look good. Schedule exactly the right information to appear at exactly the right time – contact info, links, boarding passes, etc. Use our tasks feature to ensure something gets done along with SMS alerts if it's really important. Emailing a forgetful recipient? Use our response detection feature to make sure your email doesn't get lost. Think of it as response insurance.
    Starting Price: $5 per month
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    Kerio Connect
    Secure, enterprise-style email, calendar & collaboration without the high cost. Kerio Connect delivers all the features and functionality for collaboration and messaging solution without the complexity and high price tag of other systems. Email is integrated with shared calendars and scheduling, contacts management, tasks, notes, shared and public folders, and instant messaging. Synchronize messages by direct push to your choice of mobile device via Microsoft ActiveSync. Instant Messaging is XMPP-compatible and can be used from various 3rd party chat/IM applications on desktop and mobile phones. You can install Kerio Connect in 10 minutes and users can be up and running in just 10 minutes more. Kerio Connect can be deployed on-premises or in partner-hosted cloud environments. Deploy for users on Mac, Windows, or Linux; plus full support for Outlook (Windows and Mac) and many other IMAP or POP compliant email clients.
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    Disroot

    Disroot

    Disroot

    Disroot provides secure email accounts for your desktop client or via a web interface. The communication between you and the mail server is encrypted with SSL, providing as much privacy as possible. Furthermore, all the emails being sent out from our server are encrypted as well (TLS) if the recipients email server supports it. This means that emails are no longer sent as traditional "postcard", but are actually put in an "envelope". Our webmail is powered by RainLoop. Rainloop is a modern approach to webmail. It's simple, fast and provides most of the features one could expect from webmail. Select your background picture. Display conversations in a threaded mode. The interface is being translated to many languages. Set up rules to automatically move or copy email to specific folders, forward or reject emails. You can add your contacts and even link your Nextcloud contacts directly into the webmail.
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    OpenText Core Email Continuity​
    The OpenText Core Email Continuity solution ensures continuous access to email even when your primary mail infrastructure goes down, by automatically redirecting messaging to a secure web portal or Outlook via POP/IMAP, allowing users to read, reply, forward, compose, and send email normally during outages. It provides up to 30 days of stored inbound messages, preserving recent email history. During a mail-server outage, incoming messages are spooled at the spam filter, and users are automatically directed to the continuity service; once the primary server returns online, all email activity (sent items, replies, forwards, new messages) syncs back automatically to the main mailbox, preserving continuity. It requires no additional hardware, it auto-provisions through a central portal, and runs transparently until needed. Access can be from any device, anywhere, via web or standard email clients.
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    Hexamail Flow
    Hexamail Flow is a full email client, with calendaring, tasks and contacts. It operates with Office 365, Gmail, including modern authentication methods (OAUTH) works with Exchange on premises and all IMAP and POP3 servers. The GDPR data protection module offers email and office document redaction features including full PST file import, eml and msg file import, office document import and printing output or PDF generation of redacted content.
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    Mail Backup X

    Mail Backup X

    InventPure

    Top notch Mail backup solution that lets you back up your personal emails from almost all the email sources available today and organize them under one safe and secure mail archive. No more worries about missing or deleted emails, Mail Storage Quota full warnings, lost productive hours when you are using Mail Backup X for teams. You can focus on what matters to you the most, “your business.” A Mail Backup App that’s plug and play with all major mail clients like Apple Mail, Outlook Mac, Windows Outlook, Office 365, Thunderbird, Postbox. Configure mail backup with these mail clients in few clicks and all your mails will be Automatically backed up as they arrive in your mailbox. You can also backup mails from multiple Online Mail Service providers like Gmail, Yahoo, Outlook.com, AOL, Yandex, mail.ru, iCloud mail.com, Protonmail, Zoho, Gmx.net, web.de, Cpanel hosted websites, business mail hosting services supporting IMAP and Microsoft Exchange.
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    one.email

    one.email

    one.email

    one.email is an AI-powered email client designed to streamline your inbox by connecting multiple email accounts and organizing them with smart categorization and powerful search capabilities. It allows users to save hours each week by turning email chaos into clarity, offering features like automatic email classification, unlimited email storage, and a unified calendar. It emphasizes user privacy, ensuring no ads or tracking, and provides premium support. one.email is compatible with IMAP, SMTP, Google/Gmail, and Outlook accounts, making it a versatile solution for managing various email services in one place.
    Starting Price: $99 one-time payment
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    MacMister Email Backup
    Email Backup software for Mac is known as one of the perfect tool when it comes to the export of data from multiple web emails to hard drive/IMAP server/cloud servers. Amplification of user efficiency by offering an instant technique of converting email from one webmail service to another. Protect meta headers & email properties like hyperlinks, images, formatting, subject, date, time, etc. Preserve exact folder hierarchy and data integrity throughout the email backup process. Choose the start backup to activate the backup email files process. Once the conversion is finished, a notification will appear on the screen. Then the destination folder opens with the ensuing file and Savelog.txt containing the email backup information.
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    DragDrop
    We wanted to overcome the slow proces of getting an email out of Outlook into your CRM, document management system, ERP while cluttering your desktop with emails. So we created DragDrop for Outlook. DragDrop for Outlook is an Outlook add-in that loads with your Outlook Desktop Client and creates the drag and drop functionality in the background. Easy, without bothering the user with any configuration. While companies are moving to Office 365 / Microsoft 365 and start using Outlook on the Web – also called OWA / Outlook Online – we used a similar process to not just be able to drag an email or attachment from Outlook on the Web to another browser but also to your desktop, explorer and any application that normally accepts a file drop. Dragging mails and attachments directly from Outlook to anywhere has never been as easy as before. Just install and start drag and dropping!
    Starting Price: €19 per user
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    GMX

    GMX

    GMX

    What makes GMX stand above other free email providers? We ensure that your email and other data is safe at all times with powerful antivirus protection and spam filters. And for even more peace of mind, you can activate email encryption and two-factor authentication. Need more than one email address? No problem – you can create up to ten in a single account and manage all these alias addresses in a single inbox. Additionally, GMX will help you stay organized with an easy-to-use online calendar and address book. Finally, with access through any computer using our webmail feature and on all your devices with our mobile apps, you can be sure that you are always in touch with those who matter most. GMX prides itself on providing unparalleled email services to each and every user. We are constantly developing new and exciting features that make our email accounts stand out from the crowd.
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    NAVER WORKS
    Naver Works is a business messenger that anyone can easily use with a screen similar to the Naver/LINE service. It communicates with co-workers through messages and enables organic collaboration with Naver Works' unique group function. You can have conversations with LINE users as well as Naver Works users of other companies, unifying communication channels with customers or business partners. Messages, bulletin boards, calendars, address books, to-dos, surveys, mail, and drives, all necessary for work, all in one NAVER Works app. Quick link between PC and mobile app allows you to work anytime, anywhere. Problems are easily prevented through monitoring as well as setting the NAVER Works environment, adding members, granting administrator privileges, and setting the scope of service use. In addition, by setting the company's data security, you can quickly respond to human errors such as loss of login information or device loss.
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    MDaemon Email Server

    MDaemon Email Server

    MDaemon Technologies

    The MDaemon Email Server was one of the first Microsoft Exchange alternatives offered to businesses around the world. It has been developed with the ongoing input from IT professionals seeking an easy-to-use, reliable, and secure mail server that does not require expensive administration or impose high per-user costs. It simplifies messaging and collaboration with a focus on security and privacy, an intuitive, user-friendly web mail design and by offering administrators Mobile Device Management, Business Instant Messaging, Document Sharing, and other enterprise-class features that can be managed with minimal support. MDaemon Email Server supports IMAP, SMTP, and POP3 protocols, and features include: integrated webmail with IM and document sharing, Outlook support, compromised password alerts, color-coded log files for quick and easy troubleshooting, customizable email policy setting to fit your unique network environment, Mobile Device Management, Account Hijack Detection, and more.
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    Starting Price: $360 per year
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    RainLoop

    RainLoop

    RainLoop

    Modest system requirements, decent performance, simple installation and upgrade, no database required - all these make RainLoop Webmail a perfect choice for your email solution. Modern user interface. Complete support of IMAP and SMTP protocols including SSL and STARTTLS. Sieve scripts (Filters and vacation message). Minimalistic resources requirements. Direct access to mail server is used (mails are not stored locally on web server). Allows for adding multiple accounts to primary one, simultaneous access to different accounts in different browser tabs is supported. Additional identities. Administrative panel for configuring main options. Really simple installation and update. Integration with Facebook, Google, Twitter and Dropbox. Managing folders list. Simple look'n'feel customization. Configurable multi-level caching system. Extending functionality with plugins installed through admin panel. Perfect rendering of complex HTML mails. Drag'n'drop for mails and attachments.
    Starting Price: $95 per year
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    Mail.com

    Mail.com

    Mail.com

    Choose your email address from our huge selection of domains – from @elvisfan.com to @consultant.com – to suit all your needs. At mail.com you can create a personal and unique email address to express who you are, entirely for free. Start by choosing your username and desired email domain from the 200 domains which are listed below. Become a premium user to benefit from exclusive features. Once you register as a free user, you can easily upgrade your account. mail.com is a free webmail client based in the United States. It offers a wide range of unique email domains, a customizable user interface, as well as numerous useful features integrated in each email account. Purchased in 2010 by the German United Internet Group, Europe's leading internet specialist and one of the world's largest web hosting provider.
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    MailChannels

    MailChannels

    MailChannels

    Secure and deliver email at scale. Use MailChannels to uncover bad actors and prevent spammers from taking advantage of your infrastructure. Monitor outgoing email messages for spam and unusual sending activity. Protect your customer inboxes against spam, phishing, and other email threats. A powerful, intuitive interface makes managing your customers simple and efficient. We operate across multiple clouds and minimize single points of failure to keep our services online, all the time. Get a real human response to your ticket within 30 minutes or less, 24/7/365. MailChannels Outbound Filtering is a cloud-based SMTP relay service which identifies and blocks spammers to ensure reliable email delivery. With Outbound Filtering, you can eliminate email delivery problems caused by IP address blocklisting. Automatically shut down compromised accounts and scripts to improve your security.
    Starting Price: $79.99 per month
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    Apple Mail
    Apple Mail is an email client that is included on iPhone, iPad, iPod, and Mac devices by default. You can link it to your Gmail account, or use it instead of Microsoft Outlook. There are two ways you can set up an email account in the Mail app on your iOS device — automatically or manually. Apple may collect and use your domain address (for example, yahoo.com, gmail.com, etc.) in order to improve our products and services. Beyond this, your full email address will not be stored, and will not be used or shared with third parties by Apple. There are two options for setting up an email account in the Mail app on your iPhone, iPad, or iPod touch: automatically or manually. Learn about which option is best for you. Learn what to do if you need help. For example, changes you made to Contacts, Calendars, or Reminders on one device didn't appear on all devices. How to control your inbox and more easily focus on the messages that are important to you.
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    Sysinfo Mail Migration Tool
    Moreover, this tool can also migrate one email file format to different email file formats. You can quickly move and transfer emails with attachments in bulk to different clients. Equipped with a user-friendly interface and no technical assistance is needed. The Mail Migration Tool can help you to back up and download webmail emails in the form of PDF, CSV, GIF, JPG, TIFF, HTML, MHTML, PNG, DOC, DOCX, and DOCM file formats. Backup is necessary because accidental deletion of emails can happen anytime so having a backup will help you to restore all of them if such a thing happens. If you are willing to convert emails of the webmail clients to the file formats supported by other mail clients then it is also possible with the help of the mail migration tool.
    Starting Price: $399 one-time payment
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    Mail-in-a-Box

    Mail-in-a-Box

    Mail-in-a-Box

    Mail-in-a-Box lets you become your own mail service provider in a few easy steps. It’s sort of like making your own gmail, but one you control from top to bottom. Technically, Mail-in-a-Box turns a fresh cloud computer into a working mail server. But you don’t need to be a technology expert to set it up. Each Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software. It also includes contacts and calendar synchronization. The box also includes other standard mail functionality like spam protection (spam filtering and greylisting), mail filter rules, email client autoconfiguration, and automated backups to Amazon S3 and other services. The box also includes automatic DNS configuration when you let it become your nameserver so that it can set important DNS records for mail deliverability and security including SPF, DKIM, DMARC, and MTA-STS. When enabled, DNSSEC (with DANE TLSA) provides a higher level of protection.
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    Cigati Mail Migration Tool
    Cigati Mail Migration Tool is a stand-alone utility with an interactive user interface that is compatible with technical and non-technical users. It is suitable for all the versions of the Windows operating system. This advanced utility facilitates users to backup and migrates all the mailbox data of various email clients into different file formats and email clients. It also allows users to backup and migrate various file formats into various docs, images, and mailbox formats. With the help of this utility, you can import Yahoo Mailboxes to Gmail, Office 365, Thunderbird, IMAP, and other webmail email clients. You can also backup them into PDF, PST, EML, DOC, JSON, PNG, HTML, CSV, etc. This Mail Migration Tool facilitates users to perform multiple useful tasks like export Office 365 mailboxes to PST, backup Gmail emails to PDF, import PST to Office 365, export OST to PST, convert MSG to PDF, etc.
    Starting Price: $399 one-time payment
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    SPYERA

    SPYERA

    SPYERA

    See where your employees are, what they’re doing, and what they’re saying. Monitor your business mobile phones and protect your intellectual property. Cell phone spy software can enable you to know if any secret information of your company is being shared by someone. Monitor everything about phone calls. Call history, call recording, live call listening. See everything that's being typed on the target device. Records the entire keystroke history. Access and download photos and videos that were taken by the target device camera. SPYERA mobile spy app and computer spy app is undetectable. It runs in the background without any pieces of evidence. Read the contents of outgoing and incoming SMS messages, Emails and including webmails​. Read the contents of outgoing and incoming SMS messages, Emails and including webmails​. Monitor what web sites are being visited, bandwidth, and login details on those websites.
    Starting Price: $49 per month
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    Airmail

    Airmail

    Airmail

    Airmail 3 — This fully accessible mail client was designed specifically for iOS, macOS and watchOS. Email workflow is optimized with extensive customizations, custom actions and deep integration with a wide range of apps and services. Airmail is designed from the ground up to be a powerful mail client which allows you to customize it to meet your needs. Integrate your favorite apps, and create custom actions to make your life easier. Whether you're using your Mac, iPad, iPhone or even your Apple Watch, Airmail can be wherever you need. Add as many email accounts of any type your like to Airmail. (Gmail, GSuite, iCloud Mail, Exchange, Office 365, Microsoft Outlook, IMAP and POP3). See all of the email in all of your inboxes at once with the unified inbox feature. You can even exclude accounts from this view if you want to. When you just want to see the important emails, the smart inbox is here for you.
    Starting Price: $2.99 per month
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    ClientFlow

    ClientFlow

    ReportGarden

    Shared Inbox and Project management software for Client service teams. Manage your team’s email conversations, tasks and timesheets on a single platform. ClientFlow gets your personal email conversations, your team's group email conversations and client communication on a single shared platform where every mail is owned up and is responded to. Have all your conversations with clients in one place, Standardize Approval process with Custom branded Approval requests and automate repeated conversations with customized message templates. Connect your Email accounts or Set up auto-forwarding from any email address and share with Teammates so they have visibility into all Emails Conversations on one shared inbox software without having to switch between different group mail accounts. ClientFlow works a lot like your email client but builds on top of it to include useful features that facilitate group conversations much better.
    Starting Price: $19 per month per user
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    SenditCertified

    SenditCertified

    Privacy Data Systems

    SenditCertified provides a patented menu of cloud-based services, enabling subscribers to send and receive secure email and attachments, store large files, and complete signature-required transactions securely. With SenditCertified, your secure email has never been simpler and more secure. Try SenditCertified‘s secure, biometric-enabled email services for free for 14 days, no credit card is required. SenditCertified’s patented technology enables you to send confidential medical information such as patient social security number and address, diagnoses, referrals, test results, and pharmaceutical details can be sent and received securely, while maintaining HIPAA compliance. SenditCertified’s patented technology enables you to easily communicate online while maintaining attorney–client privilege. Safely send and receive email messages and documents – as well as audio and video files – while maintaining control over who can view, print, save or download your messages and files.
    Starting Price: $14.50 per user per month
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    Amazon WorkMail
    Amazon WorkMail is a secure, managed business email and calendar service with support for existing desktop and mobile email client applications. Amazon WorkMail gives users the ability to seamlessly access their email, contacts, and calendars using the client application of their choice, including Microsoft Outlook, native iOS and Android email applications, any client application supporting the IMAP protocol, or directly through a web browser. You can integrate Amazon WorkMail with your existing corporate directory, use email journaling to meet compliance requirements, and control both the keys that encrypt your data and the location in which your data is stored. You can also set up interoperability with Microsoft Exchange Server, and programmatically manage users, groups, and resources using the Amazon WorkMail SDK. Amazon WorkMail features simple, low, monthly per-user pricing and costs $4 per user per month which includes 50GB of storage per user.
    Starting Price: $4 per user month
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    Mailbird

    Mailbird

    Mailbird

    Mailbird is a fast, modern email client for Windows and macOS, trusted by millions with over 4 million downloads. It brings all your accounts—Gmail, Outlook, iCloud, IMAP, Exchange—into one unified inbox with smart features like Snooze, Undo Send, Quick Reply, Send Later, email snippets, and drag-and-drop organization. Customize your workspace with themes, custom avatars, and flexible layout options. Stay productive with sidebar integrations for Google Calendar, WhatsApp, Slack, Trello, Asana, and more—no app switching needed. Built natively for each platform and optimized for both Windows 11 and Apple Silicon, Mailbird delivers speed, simplicity, and seamless control. Available in a Free version with an optional Premium upgrade. Backed by top-rated customer support.
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    Matrix High Volume Messaging
    Matrix Platform is designed to improve productivity and collaborative working process across departments and teams. We have provided group email platforms to shipbrokers, charterers and commodity traders for over 30 years. Integrated high volume secure email and fax handling. Simple or Classic User Interface – to ensure the right user experience. Full integration available with S&P, Chartering, Offshore and Fixtures modules. The matrix allows groups, teams, and departments to work collaboratively to increase productivity. ‘Rules’ are applied to incoming and outgoing messages ensuring that the right workgroups and individuals ‘view’ each message. The system proactively alerts you to emails based on your chosen keyword. Enables users to prioritize vital revenue-generating commercial messages. All messages marked as read on your smartphone/tablet will appear as read on the Matrix client as well.
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    Mailpile

    Mailpile

    Mailpile

    Mailpile is an effort to reclaim private communication on the Internet. A project to rescue our personal lives from the proprietary cloud and prevent our conversations from being strip-mined for corporate profit and government surveillance. Mailpile is taking e-mail back. Powerful search & tagging makes your pile of mail managable, whether you have just a few messages, thousands or even millions. Mailpile is designed to be fast and responsive, outperforming "the cloud" even on slow computers. And it works even when the Internet is down. OpenPGP signatures and encryption are part of Mailpile's core design, not an afterthought. Mailpile makes it easy to sign and encrypt your mail. It's ironic that most web-mail solutions filter out spam, only to replace it with their own advertisements. Mailpile has no ads.
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    Horde

    Horde

    Horde

    Horde is the most flexible groupware on the planet, and that makes it the perfect platform on which to build your business productivity software. Horde connects to (and officially supports) more backends (all the leading SQL, LDAP, IMAP, Sieve, SMTP, cache platforms available today) than any other open source groupware system. This means you can continue to use your existing userbase and your users do not have to remember any additional passwords. Horde's feature set rivals the largest enterprise email systems. We have an incredible feature set that compares favorably against any competition in our primary apps (mail, calendar, address book), and even more in our secondary apps (time tracking, wiki, ticketing, and more).
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    Alias Email

    Alias Email

    Alias Email

    Alias Email is a privacy-focused email forwarding service. Create email aliases in one click - unique and anonymous email addresses that forward to your real inbox. Use them for newsletters, signing up on websites, or managing different roles in your work. Stay organized and secure without revealing your personal email! Alias Email is perfect for: - Privacy: keep your personal email invisible from third parties and data brokers; - Spam control: use a unique alias for every service. If spam arrives, you can disable this alias; - Inbox organization: route messages by alias, making it easy to filter and manage communication; - Easy to use: no complex setup, no apps to install - aliases that work anywhere, instantly. Alias Email doesn’t store your messages and never sells your data. Our mission is clear: to give you back control of your email identity in a world that increasingly profits from it.
    Starting Price: $4.99/user/month