Alternatives to Claws Mail
Compare Claws Mail alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Claws Mail in 2026. Compare features, ratings, user reviews, pricing, and more from Claws Mail competitors and alternatives in order to make an informed decision for your business.
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1
Proton Mail
Proton AG
Proton Mail is the simplest way to protect your communications with built-in end-to-end encryption. Prevent data breaches, stay compliant with regulations like GDPR and HIPAA, and earn client trust. Protected by Swiss privacy laws and trusted by over 50,000 businesses, Proton Mail keeps your business data confidential and under your control. With Proton Mail and Calendar, your team can securely manage their inbox and schedule, while your organization maintains a professional presence with support for custom email domains and personalized branding. And with the Easy Switch tool, migrating from Google or Microsoft is seamless, no IT expertise required. -
2
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.Starting Price: $59.95 one-time fee -
3
Sylpheed
Sylpheed
Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client. Sylpheed provides intuitive user-interface. Sylpheed is also designed for keyboard-oriented operation, so Sylpheed can be widely used from beginners to power users. Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and other Unix-like systems. Sylpheed uses GTK+ GUI toolkit. The newest version of Sylpheed works with GTK+ 2.4 or later (2.6 or later is recommended). Sylpheed is a free software distributed under the GNU GPL (the library part is GNU LGPL). You can freely use, modify and redistribute it under the license. Sylpheed adopts 3-paned display similar to the popular e-mail clients for Windows such as Outlook Express and Becky. So it is easier to use it on the first time. The user-interface is constantly improved, and Sylpheed achieves attentive, comfortable operationality. -
4
SmarterMail
SmarterTools
SmarterMail is the ideal Microsoft Exchange alternative. It’s the only business email server on the market that offers native support for Exchange protocols: MAPI, EWS, and EAS, without requiring any additional software or plug-ins for Microsoft Outlook or other desktop or mobile clients. It delivers all the features of Exchange at a fraction of the cost. SmarterMail also includes audio/video group chat and Online Meetings for team collaboration at no extra charge. Its newest feature, the SmarterMail Marketplace, enables seamless integration with platforms like OnlyOffice, Collabora, and AI tools such as OpenAI’s ChatGPT. Available for both Windows and Linux, SmarterMail has lower hardware requirements, superior stability, and reduced maintenance costs. It’s the perfect solution for businesses of any size or industry seeking Exchange-level functionality, without the high costs.Starting Price: $500.00/one-time -
5
Vivaldi Mail
Vivaldi Technologies
A powerful email client built right into your browser. Vivaldi Mail makes it easy to manage emails from multiple accounts, mailing lists and feeds in a unified inbox. A database of all your messages, labels, filters, searches is maintained by Vivaldi and the bedrock of our powerful email client. Mail from all of your accounts is indexed, so it’s searchable offline. Having a mail client built into your browser just makes sense. Compose messages in new tabs, keep multiple messages open and manage them with ease using Vivaldi’s extensive tab features. There are two counters next to folders in Vivaldi Mail. Brand new mails that have never been seen before are called Unseen. Emails that you have seen but not dealt with are Unread. Use customizable Keyboard Shortcuts to work through email faster. Use the Back/Forward buttons to jump in through “history” and views while you work.Starting Price: Free -
6
Amazon WorkMail
Amazon
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 -
7
TouchMail
TouchMail
TouchMail is an email app that brings all your accounts into one place with a visual, colorful display that saves you time on your email! TouchMail looks and works great with a touchscreen, or keyboard and mouse. Color code messages by sender. Browse messages at a glance. Less clutter in a few taps. Sort and quickly clean up mail from top senders. The top-rated email app for Windows 10, with over 1.5 million downloads, and one of Microsoft's "Essential Windows 10 Apps". Works great with touch, or quickly scroll and browse with your mouse or touchpad. TouchMail is the fastest and easiest way to find what matters most and clean up the rest in Gmail, Outlook.com, Yahoo Mail, iCloud, AOL, Office 365, and most IMAP email accounts. Turn your email into a visual and colorful inbox that you can explore the way you want – using touch, mouse and keyboard, or pen – with rich visualizations, colorful message tiles you can resize, and familiar interactions.Starting Price: $29.99 one-time payment -
8
HCL Notes
HCL Software
Integrate social collaboration, messaging and business applications into a single workspace. HCL Notes is the email client software that gives teams access to email, calendar, and contact management capabilities, and seamlessly integrates other collaboration tools and HCL Domino business applications. With an improved user experience and enhancement of essential mail features, HCL Notes transforms your everyday email into an operational center and becomes even more essential to how your team’s work. Integrate social collaboration, messaging and business applications into a single workspace with Notes. Now, with an improved user experience and enhancement of essential mail features. From leading logistics companies to powerful banks and fashion houses, thousands of the smartest businesses in the world rely on Notes to help run their everyday. -
9
Mailtrim
Mailtrim
Reinventing email to live in your inbox! A powerful standout mail tool to send and receive organised email communications. Sync all your emails Manage all your emails and contacts from multiple accounts easily in one unified inbox. Best free email client. Highly customisation. Give a new look to your email with the finest outlook alternative, the mailtrim. Choose from a ton of customizations to send a unique type of business email. Best free email client. Secure and private. Have round-the-clock control on the emails you send and receive! Acquire this secure email client and apply pgp encryption to hide the contents of your emails. Sophisticated and slick UI. Have high user-experience with a minimally designed interface. Find everything fast! Have this best free email client for personal and professional use that has an easy-to-navigate immersive user interface. The quick to use email client for windows and mac allows the users to send smart emails.Starting Price: Free -
10
Notion Mail
Notion
Notion Mail is an AI-powered email platform that reimagines the inbox with a minimalist, customizable interface designed to streamline communication and enhance productivity. It allows users to organize their inboxes through AI-driven auto-labeling that categorizes emails based on content, such as job offers, travel bookings, or newsletters. Users can create custom "Views" to filter emails by topic, sender, or urgency, enabling focused attention on what's most important. It supports Notion-style slash commands for formatting, built-in scheduling linked with Notion Calendar, and AI-assisted email drafting to expedite responses. Snippets allow for reusable email templates, reducing repetitive writing tasks. Notion Mail maintains robust security standards, including SOC 2 Type 1 certification and HIPAA compliance, ensuring user data is protected.Starting Price: $10 per month -
11
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.Starting Price: Free -
12
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 -
13
Superhuman Mail
Superhuman
Superhuman Mail is an AI-powered email application designed to help professionals manage their inbox faster and more efficiently. The platform focuses on improving productivity by reducing the time users spend reading, writing, and organizing emails. With features like keyboard shortcuts, reminders, and AI-assisted writing, Superhuman helps users respond to important messages quickly and consistently. The app integrates with Gmail and Outlook, allowing teams to upgrade their existing email workflows without switching platforms. Users can schedule emails, snooze messages for later, and receive reminders to follow up on unanswered emails. Built-in read receipts and activity indicators provide insight into when recipients open messages or when teammates are replying. By transforming email into a task-driven workflow, Superhuman Mail helps users stay organized and avoid missed communication.Starting Price: $30 per user per month -
14
QQmail
Tencent
QQmail app gives you an excellent email experience and instant new mail notifications. You may access your QQ e-mails from an Android device more efficiently. Get new mail notifications instantly, and send photos and files from your phone using QQmail. Preview attachments online or open them with apps on your phone. Search emails in all or specific folders and manage emails easily in the inbox,group-mail folder, personal folders, and other POP account folders. Access emails with enterprise email accounts. Synchronous update data between your phone and computers.Starting Price: Free -
15
FairEmail
FairEmail
FairEmail is easy to set up and works with virtually all email providers, including Gmail, Outlook and Yahoo! FairEmail might be for you if you value your privacy. FairEmail is an email client only, so you need to bring your own email address. FairEmail does not support non-standard protocols, like Microsoft Exchange Web Services and Microsoft ActiveSync. Almost all features are free to use, but to maintain and support the app in the long term, not every feature can be for free. See below for a list of pro features. This app is deliberately minimalistic by design, so you can concentrate on reading and writing messages. This app starts a foreground service with a low priority status bar notification to make sure you'll never miss new emails. -
16
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. -
17
Mail Pilot
Mail Pilot
Mail Pilot is a privacy-first email app designed to help users manage email fatigue and declutter their inboxes. With a clean, focused interface, it allows users to prioritize their most important messages while organizing others into a calm, manageable workflow. Mail Pilot supports all standard IMAP email servers and ensures your emails stay on your device, avoiding third-party servers. The app is native to macOS and offers an intuitive task-based approach to handling emails. Users can sort emails into actionable tasks, schedule messages, and archive emails with ease, all while maintaining an emphasis on privacy and simplicity. The app’s streamlined design has received praise for making email management both efficient and visually appealing. Additionally, Mail Pilot provides a secure environment for managing personal and professional correspondence, ensuring that users can control their inboxes without feeling overwhelmed. -
18
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 -
19
EverDesk
EverEZ Systems
EverDesk is the first and only email client which stores email messages as individual files together with your other files and documents in regular Windows folders, so you can keep all the information related to the same subject together and work with it in a simpler, more flexible, and more powerful way. EverDesk combines the best features of your email client, file manager, Windows Desktop, address book and calendar into a single tightly integrated interface, making it the most advanced information management software on the market. EverDesk's integrated email and file management distinguishes it as a uniquely powerful information manager on the market. Each EverDesk edition enables you to see, organize, and work with all of your email, all of your attachments, all of your files and documents from within a single interface. There's no more alternating back and forth between your email program and Windows Explorer while working on individual activities.Starting Price: $44.95 one-time payment -
20
Clyton
Gammadyne Corporation
Clyton is an email client with advanced security and spam filtering features. The spam filter is highly configurable and supports DNS blacklist checking (DNSBL). Expect 85% of spam to be eliminated with the default configuration. Email that is suspicious but not obviously spam is quarantined for 24 hours and then retested, providing the blacklist enough time to react to new spam sources. The built-in address book supports personalized mass-mailings. Received email cannot run scripts, download multimedia, or use embedded objects without your approval. Other features include encrypted storage, whitelisting, powerful HTML editor, attachment viewer, message drag and drop, custom message templates, SSL encryption, USB flash drive installation, and much more.Starting Price: $29 -
21
Trojitá
KDE
Trojitá is an email program ("client") specialized in giving fast and efficient access to mailboxes over the IMAP protocol. An IMAP mail server stores messages and allows clients to fetch messages to the local computer when asked for. It prioritizes efficiency, speed and open standards above other goals. Trojitá also aims to be multi-platform, and functions well on everything from big desktop computers to small cellphones. Trojitá is a stand-alone program, not part of a "personal information manager" suite. -
22
MailAI
MailAI
MailAI is an AI-powered email-automation platform that deploys personal AI agents that run 24/7 in secure, isolated sandboxes to manage, respond to, and automate workflows in your inbox and calendar. Your agent can auto-respond to customer inquiries, monitor invoices via Stripe, coordinate meeting schedules, generate daily summaries of unread emails, and carry out custom tasks, all triggered by simple plain-English instructions. Built for enterprise-grade data security, MailAI integrates deeply with tools like Gmail, Google Calendar, and Stripe, and supports conversational interaction where you can ask your agent to “find all emails from Sarah about the Q4 deadline” or “schedule a check-in meeting and send the invite.” The system includes powerful features like inbox management, invoice and task tracking, email templates, performance-based workflows, and built-in compliance protections (CASA-verified sandboxes, encryption, GDPR/CCPA support).Starting Price: $25 per month -
23
K-9 Mail
K-9 Mail
K-9 Mail is designed for both novice and power users and offers lots of features for everyone. K-9 Mail has controllable debug logging. Users can activate logging to help diagnosing problems and errors. As an open source privacy-conscious project we don’t implement an always-on logging system that reports all the device’s activity to a central server. While this would make issues easier to fix it would also be costly to host the server and compromise the privacy of our users. Communication security is an increasingly important subject. K-9 Mail aims to provide intuitive e-mail security in many forms, both in terms of supporting secure login to your e-mail server and in the security of the e-mail itself. -
24
Fastmail
Fastmail
Email you can feel good about. features you’ll love. You get 100% of our efforts and expert support when you need it. Email holds the details of your life. Here, your story is protected, not monetized. Thoughtful and speedy email, calendars, and contacts; all ad-free. Built with you in mind, you’ll love our intelligent features. Internet companies use your data as a way to get rich. But it doesn’t have to be this way. Take back your privacy and get a better email experience. With your email on your side, you spend more time doing what you love. Use Fastmail in your web browser, on mobile devices, and on desktop apps (Outlook, Thunderbird, Mac Mail). Breeze through your day with email, calendars, and contacts all in one app. Seamlessly import your data. Keep your life organized with a full-featured inbox. Bring all your calendars together. Share with your favorite people. Use your custom domain, and own your email address forever.Starting Price: $3 per user per month -
25
BlueMail
Blix
BlueMail by Blix a free, beautifully designed, universal email app, capable of managing an unlimited number of mail accounts from various providers, allowing for smart push notifications and group emailing while enabling personalization across multiple email accounts. The BlueMail app connects directly to your mail server and is the perfect replacement for your stock email app. With a wide range of visual and technical customizations, swipe actions and menus, action bars and buttons, colors and themes – BlueMail delivers powerful capabilities for your Team. Whether you go Pink or Blue. Go BlueMail. Available on Windows, Mac, Linux, Android, iOS, and Amazon. With the people-centric mailbox, you can focus your attention on emails from only people at the flip of a switch by using People Mode. BlueMail’s navigation picker helps you access any account: IMAP, Exchange or POP3 in a breeze. Each account can be identified by a service provider avatar.Starting Price: $5.99 per user per month -
26
PrimeClaws
PrimeClaws.com
PrimeClaws is a managed hosting platform for OpenClaw autonomous AI agents that lets users deploy and run their OpenClaw instances in the cloud with minimal setup and no DevOps knowledge; it focuses on providing a simple, one-click deployment process so an AI assistant built on OpenClaw can run 24/7 without requiring your laptop or local server to stay on. With support for major LLMs (like Claude, GPT, and Gemini) and persistent memory across sessions, agents can continue working and remembering context over time, and it integrates with messaging channels such as WhatsApp, Telegram, Slack, and others, so your AI assistant can be accessed and interacted with through familiar communication apps. Hosting through ClawHost abstracts infrastructure management, offering global cloud operations with persistent uptime, root access on self-hosted VPS environments, and full control over your agent’s environment, while automatically keeping the AI instance running.Starting Price: $9.99/month -
27
myMail
My.com
An expert way to manage all email accounts. Your email provider doesn’t support push notifications? With myMail it does. Hate it when an email wakes you at night or distracts you from your barbecue? Choose when you want to receive push notifications. myMail brings profile pictures of your contacts to your message list. Take a look at your inbox to instantly know who’s writing you. myMail displays icons from popular services so that you can recognize the sender in a blink. Your friends don’t use an avatar? We’ll do it for them! For a contact that has no avatar, myMail displays the first letter of the contact’s name. myMail does exactly what it’s meant to do – help you manage your emails – and it does this incredibly well. Traffic compression brings your messages into your mailbox quickly. So you can use your data plan for other things, like watching that cool video. Brings your email in superfast even if the number of messages and contacts you have grows to an amazing size. -
28
Mailspring
Foundry 376
Boost your productivity and send better email with Mailspring, the best mail client for Mac, Linux, and Windows. Multiple accounts (IMAP & Office 365), touch and gesture support, advanced shortcuts, lightning-fast search, undo send, unified inbox, read receipts, link tracking, and more, mac, windows, and linux support, themes and layouts (including dark mode), localized into 9 languages. Mailspring indexes your mail so you can use advanced, Gmail-style search queries and search message contents across all your connected accounts. Never lose an email again. Understand your audience. Send timely follow-up. Turn clicks and opens into actionable insights. Mailspring Pro is your unstoppable email sidekick for sales and business. Mailspring Pro removes the limits in the free version, so you can snooze messages, schedule reminders, and send later an unlimited number of times and conquer your inbox. Understanding your contacts and customers is the key to connecting with them.Starting Price: $8 per month -
29
Yahoo! Mail
Yahoo!
Yahoo Mail is a free email service from Yahoo, as well as a mobile app for email management. Thanks for checking out the Yahoo Mail app—the best email app to organize your Gmail, Microsoft Outlook, AOL, AT&T and Yahoo mailboxes. Whether you need a clutter-free mailbox, added customization, different views for deals, receipts, and attachments, or even more storage, we’ve got you covered. -
30
Newton Mail
CloudMagic
Email app with space-age features for modern-day business communication. Designed to delight, for all your email accounts, on all your devices: iPhone, iPad, Android, Mac & Windows. Read Receipts comes baked in with Newton, with all your sent emails tracked without you having to do anything. Apart from giving you instant gratification, it also makes your follow-ups timely and effective. Recap automatically brings back conversations that are waiting for your reply or that need following up. It also covers other mails with due dates, reminders etc., so that nothing slips through the cracks. Tidy Inbox helps you stay clear of unwanted emails by automatically removing newsletters and other distractions from inbox. Focus on the emails that actually matter and make your inbox distraction-free. Most of us are assigned tasks via email. But some of us like to manage them outside our Inbox. Newton lets you save emails to Todoist, Evernote, OneNote, Trello or Asana in a single click.Starting Price: $49.99 per year -
31
Pingly
Pingly
Pingly is a beautiful, modern email service built for today's internet. Enjoy email again with a modern and easy to use interface. Pingly isn’t just an email client, it’s also a full-featured email provider that hosts email on your domain. hat with your team using Channels. Pingly integrates email and team chat into a single interface. Save time and stay focused without having to switch between different apps. Pingly is your communication hub Message or talk seamlessly with anyone over Email, Text & Voice from a single unified platform. Pingly brings email and team chat into one place so you can stay focused and get work done. Whether for your business or side-project, Pingly is built for organizations of all sizes ranging from solo entrepreneurs to large teams. At its core, Pingly is a modern, full-featured email service built for today's internet. Setup email on your domain with Pingly in minutes and have your team collaborating together in no time.Starting Price: $5 per user per month -
32
Letterbox
Letterbox
Who reads your mails? With regular mails you, the receiver, all mail providers and maybe others can read them. With end-to-end encrypted mails only the sender and the receivers can read them. Our iOS-App Letterbox makes end-to-end encryption easy to use, is compatible with most mail providers and supports the standard encryption protocol OpenPGP. Letterbox is similar to common mail apps but indicates the security state of incoming and outgoing mails. We disinguish between a confidential and insecure mails. Letterbox is a free open-source mail client on iOS and part of an ongoing research project at the Freie Universität Berlin, Germany. Letterbox is still under development but you can soon use the app on your device with Apple's TestFlight app.Starting Price: Free -
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Hexamail Flow
Hexamail
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.Starting Price: Free -
34
Rapid Claw
Rapid Claw
Rapid Claw is a managed cloud hosting platform for OpenClaw that enables users to deploy and run a fully autonomous AI agent in minutes without handling infrastructure, configuration, or DevOps tasks. It provides a dedicated, private OpenClaw instance that operates continuously in the cloud, allowing the agent to perform real work such as managing emails, automating workflows, reviewing code, processing data, and interacting with applications without human intervention. It removes the complexity of self-hosting, which typically requires server provisioning, dependency installation, environment configuration, and ongoing maintenance, by automating setup, updates, security, and backups. Users can launch an AI assistant with no coding, no API keys, and no terminal commands, then immediately begin interacting with it through a simple interface.Starting Price: $29 per month -
35
Aqua Mail
MobiSystems
The most customizable email client for Android. Over 300 settings for full customization. Sync your Exchange contacts and calendar. Format emails with our rich text editor. Rest your eyes with our dark theme. -
36
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. -
37
OpenClaw.Direct
OpenClaw.Direct
OpenClaw.Direct is a fully managed AI assistant hosting platform that allows teams to deploy a dedicated AI assistant in minutes without managing infrastructure. The platform enables users to interact with their AI assistant through familiar messaging apps such as Telegram, WhatsApp, Slack, and Discord. Designed for simplicity, OpenClaw.Direct allows teams to set up their assistant in about five minutes with no technical expertise required. Each user receives a private, dedicated instance running on isolated infrastructure to ensure security and data privacy. The platform handles server maintenance, monitoring, updates, and infrastructure management automatically. OpenClaw can help automate everyday tasks such as drafting emails, monitoring deployments, checking system status, and preparing summaries. With always-on availability and easy integration with communication tools, OpenClaw.Direct helps teams streamline workflows and stay productive.Starting Price: $19/month -
38
Nine
NextIntelligence.ai
Nine is a comprehensive mobile business solution for email, calendar, contacts, tasks, and notes management, designed to keep your business seamlessly synchronized across devices. It offers robust support for both personal and professional productivity, enabling users to manage their workflow from anywhere. Nine is compatible with IMAP and Exchange servers, using Direct Push technology to synchronize emails, calendars, tasks, and notes in real time. For enterprise use, Nine Work integrates with Android Enterprise and MDM solutions, ensuring secure synchronization with Exchange Server while offering enhanced security for corporate data. The app enables easy management of personal and company schedules, integrates tasks with emails, and offers smooth contact synchronization. With its intuitive interface, Nine allows users to handle work-related notes and emails effortlessly. It’s designed for business professionals who need mobile access to their business communications.Starting Price: Free -
39
AlfredClaw
AlfredClaw
AlfredClaw is a personal AI agent platform that acts as a digital chief of staff, designed to operate directly within WhatsApp or Telegram. It allows users to manage their daily tasks, including calendars, emails, and reminders, through simple conversational interactions. The platform integrates with popular tools like Gmail, Google Calendar, Notion, and various productivity apps to centralize workflows. AlfredClaw features persistent memory, enabling it to remember past conversations, preferences, and important details over time. It also includes web browsing capabilities, allowing the AI to gather information and provide relevant insights on demand. Built with a strong focus on privacy, each user operates within isolated infrastructure to ensure data security and separation. Overall, AlfredClaw simplifies personal and professional management by combining communication, automation, and intelligence into a single AI assistant.Starting Price: $14.90/month -
40
ClawStack
ClawStack
ClawStack is a platform designed to simplify the deployment and management of OpenClaw AI agents. It eliminates the technical complexity of traditional installations by allowing users to launch an AI agent with a single click. Instead of manually configuring servers, SSH keys, and dependencies, ClawStack provides a fully pre-configured environment ready for immediate use. The platform includes access to more than 100 language models and removes the need for users to manage API keys. Once deployed, the OpenClaw agent can connect to messaging platforms such as Telegram and WhatsApp to automate tasks and communication workflows. Users can assign the agent various responsibilities, including summarizing emails, scheduling meetings, managing reminders, and analyzing documents. With simple pricing plans and quick setup, ClawStack enables individuals and teams to deploy a fully functional AI assistant in minutes. -
41
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.Starting Price: Free -
42
Helpwise
Helpwise
Shared Inbox for your Team Email, SMS & WhatsApp accounts. Sharing email account login among team members is not scalable. Helpwise is an easy to use shared inbox for your team email accounts like help@, sales@, jobs@ etc. As business grows, it becomes a struggle to manage customer, sales or internal emails (billing, hiring) across the company. And, then we make a blunder by sharing email logins among team members. We understand the chaos that it creates because we have been through the same pain during our previous gigs & businesses. So, this is exactly why we built Helpwise - the shared inbox that really works! We all love Gmail, Outlook & other awesome email clients. So, we have made sure that Helpwise feels as easy as these common email services. Basically, you won't miss them here. Every team member will get own separate login to access same email address. So, no more password sharing. Better security with higher productivity! -
43
MailsDaddy MBOX to PST Converter
MailsDaddy Software
MailsDaddy MBOX to PST converter is the best solution to convert multiple MBOX data files to Outlook PST format. By using this affordable email migration tool, you can easily migrate MBOX to PST, EML, RTF, MSG, HTML and other popular file formats. The converted PST file is compatible with all version of MS Outlook like 2019, 2016, 2013 etc. The MBOX to PST Converter Tool also has an option of Bulk Export with that users can easily convert multiple MBOX files to Single or separate PST file format. Features: 1. Easily convert several MBOX files in PST format. 2. Supports more than 30 email clients mailbox such as Apple Mail, Eudora, Claws Mail, Entourage etc. 3. Advance Filter Option to Export the emails of specific date range. 4. It maintains folder influence, hierarchy and Meta data after converting MBOX to PST format. 5. Compatible with all Window operating systems such as Win 10, 8.1, 8, 7, XP and other older editions.Starting Price: $39 -
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Unibox
eightloops GmbH
Unibox is a people-centric email client that organizes your messages by sender. The contact list on the left is sorted by the date of the last email and each person is displayed only once. Selecting a contact displays all messages that you exchanged with that person, similar to chat applications or smartphone SMS apps. Seeing all emails you exchanged with a person in one list lets you concentrate on the actual communication with that person, which feels much more natural. If you need to look at a specific conversation, possibly with multiple participants, Unibox lets you easily drill down into a thread view by clicking the button next to the subject. Unlike other email clients Unibox displays attachments not only as part of the message but provides you with two additional views containing all files that you exchanged with another person. -
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Thunderbird
Mozilla Foundation
Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features! Thunderbird makes email better for you, bringing together speed, privacy and the latest technologies. Focus on what matters and forget about complexity. Multiple features, such as built-in Do Not Track and remote content blocking, work together to ensure your safety and privacy, so you can have peace of mind. With Add-ons (Extensions & Themes) and many more features you can change the look and feel of Thunderbird in an instant. Organize your schedule and life’s important events in a calendar that’s fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars. Thunderbird is an open source project, which means anyone can contribute ideas, designs, code, and time helping fellow users. -
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OpenText GroupWise
OpenText
OpenText GroupWise is a secure, enterprise-grade messaging and collaboration platform that combines email, calendaring, contacts, and scheduling into a single, flexible system. It is built for organizations that require strong security, compliance, and reliability across highly regulated industries such as government, education, utilities, and healthcare. The platform enables teams to customize the user interface, integrate with systems like Microsoft Exchange and Active Directory, and centrally manage contacts, address books, and shared calendars. GroupWise includes intelligent scheduling tools, travel-time adjustments, and collaboration features that help streamline workflows and improve daily productivity. Its security measures—such as multifactor authentication, encryption, and gateway protection—ensure that sensitive communications stay protected. -
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Postbox
Postbox
All your email accounts in one place, innovative features, easy organization, fast search, and a beautiful UI. Fast, sleek and powerful, Postbox is guaranteed to give you email superpowers. Let our email organizational features declutter your inbox and your mind. Pixel-perfect, intuitive interfaces that act like real Mac and Windows apps, not webpage experiments. Build your own theme using our powerful Theme Editor, or add a professionally-designed Theme Pack that you can customize any way you like.Starting Price: $49 per user lifetime license -
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Zoho SalesInbox
Zoho
Turn unopened emails into closed deals with the only email client built exclusively for salespeople. The first email client built exclusively for salespeople. The most recent email isn't always the most important. Especially in sales. You need to stay on top of the deals that are most likely to turn into revenue. A traditional email client won't help you do that. But SalesInbox will. SalesInbox automatically prioritizes and organizes your emails according to the deals that matter most to you. See more -and do more- right from your inbox. Have your mailbox reflect your sales pipeline and your emails organized according to sales priorities, so that you stay on top of deals that matter the most. For better communication, you need better context. Know every detail about your customer to get a clearer picture and craft better responses. Get alerts for follow-up activities and notifications about the conversations that matter most. Follow-up faster and also automate the process. -
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Mailplane
Mailplane
Manage all your Gmail, Calendar and Contacts accounts in Mailplane instead of cluttering up your browser window. All-in-one app with Apple-like keyboard shortcuts. No separate set-up required. Mailplane's notifier lets you know how many unread messages are in your inboxes, right from your Mac's menu bar. It also notifies you when new emails arrive. You can react directly by archiving a message or writing a quick reply. Navigate Mailplane at the speed of light. No matter if you want to jump to a label, tab, account, or bookmark. Search for messages simultaneously across all your Gmail accounts. Get your point across with fewer words using annotations and shapes. Mailplane integrates with other macOS apps in various ways. Third-party extensions enhance Mailplane. Fully localized in English, Japanese, German, French, Spanish, and Italian. Thanks to our loyal customer base, Mailplane has been around for ages. We love to continuously improve it for you!Starting Price: $29.95 one-time payment -
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Chaos Intellect
Chaos Software
Chaos Intellect: Business email software and CRM contact management done right! If you haven't heard of Chaos Intellect before now, you've missed out! We have years of experience making great contact management CRM software, as featured in our award winning contact manager called Time & Chaos. Chaos Intellect combines this powerful contact manager experience with a great email client that hits the sweet spot for users like you! Why should you choose Chaos Intellect? We have two ways to answer that for you: on the left, you can view our features, organized by whether you are a Casual User, Business User or Advanced Power User. On the right, we let other users provide their own testimonials of how Intellect has worked for them. Keep reading for more details! Once you see enough to convince you to try it, keep in mind we have a fully-functional trial version you can download with no missing features and no hassles. We want you to see it work in the real world without any guessing!Starting Price: $59.95 per user
