Alternatives to Fluxmail
Compare Fluxmail alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Fluxmail in 2026. Compare features, ratings, user reviews, pricing, and more from Fluxmail competitors and alternatives in order to make an informed decision for your business.
-
1
Sendmux
Sendmux
Sendmux gives AI agents their own inbox and a controlled way to send email. Each agent can receive messages, read threads, handle attachments, send replies, and react to new mail through signed webhooks or Server-Sent Events. Teams can send through Gmail OAuth, Outlook OAuth, SMTP providers, or managed Amazon SES. Sendmux can spread sending across providers with weighted routing, sender-domain routing, health checks, failover, and quotas by second, minute, hour, or day. Developers get Mailbox, Sending, and Management APIs, OpenAPI docs, SDKs, the sendmux CLI, MCP tools, and Sendmux Skills. The platform also covers tenant isolation, mailbox-scoped API keys, custom domains, logs, metrics, and usage-based pricing with no per-seat or per-mailbox fees.Starting Price: $0.15 per 1000 emails -
2
Grace Mail
Profit Visions s.r.o. (LINK-V)
Grace Mail is email server software for teams that want control over their email infrastructure. It can be licensed as self-hosted software running on the customer's Linux hardware, or provided as a managed dedicated server operated by LINK-V. The product supports SMTP and IMAP and includes an administration console for managing mailboxes, domains and mail operations. Its two deployment approaches support organizations that want to operate their own server as well as teams that prefer the vendor to operate a dedicated server. Grace Mail is aimed at freelancers, small businesses and technical teams seeking company email on a dedicated or self-hosted server. The software is built and maintained by Profit Visions, and deployment, licensing, migration and support arrangements are agreed with each customer. Customers can assess the self-hosted or managed arrangement against their infrastructure preferences and operational responsibilities. -
3
SubsiMail
SubsiMail
SubsiMail is a self-hosted cold email sequencing platform. Prospect lists, templates, connected inboxes, and all campaign data live in your own database, not a third-party SaaS. It's built as a self-hosted alternative to Instantly, Smartlead, lemlist, and Apollo, with flat per-inbox pricing instead of per-seat fees, full data ownership and export, no content review, and no third-party access to your contacts or campaigns. Runs as a single Docker container on any $5 VPS. Connect Gmail, Outlook, or any SMTP/IMAP inbox; build multi-step sequences with merge fields and reply detection; manage per-user roles (admin/manager/view-only) with a full audit trail; and integrate via a REST API with personal API keys. The first connected mailbox is free forever.Starting Price: Free (paid plans from $49/mo) -
4
lfr
Anonyfox
lfr is self-hosted mail-server and newsletter software packaged as a single Go binary for Linux and macOS servers. It lets developers, self-hosters, and small teams host mailboxes for their domains, manage aliases and forwarding, search and reply to messages, and configure domain mail records. Newsletter tools support double-opt-in signup lists, Markdown-based issues, hosted archives and signup websites, one-click unsubscribe, bounce and complaint handling, and delivery through a configurable SMTP relay when direct sending is unavailable. The command-line interface runs locally or over SSH, with setup and diagnostic commands for server, DNS, and mail delivery tasks. lfr is distributed under the MIT license; the software itself is free, while users arrange and pay for their own server and any optional relay service.Starting Price: $0 -
5
MailTova
MailTova
MailTova is a hosted business email service for organizations that want branded mailboxes on their own domains. Administrators can connect domains, create and manage mailboxes, and manage mailbox storage from a web dashboard. Users can read and send messages through browser-based webmail or configure compatible third-party clients using IMAP, SMTP, and POP3. The service includes domain verification and setup guidance for email-authentication records such as SPF, DKIM, DMARC, and MTA-STS. MailTova also documents an API and an MCP server for supported client workflows. It is intended for startups, freelancers, small businesses, agencies, and teams seeking hosted domain email without operating their own mail server.Starting Price: $5/month -
6
Mail360
Zoho
Mail360 is an email API platform that gives your application full email capabilities without having to build it yourself. Whether you connect to a mailbox hosted with a different email provider or host your user's inbox with us, a single email API can power your application's email workflow. Experience secure and reliable two-way email sync with multiple email providers in real-time. Sync, send, and receive emails from anywhere with just a single email API set. Universal email API that lets you build email workflows for your application, however you see fit. Go beyond simply connecting your application to other email providers. Host your application's mailbox and integrate it with your workflow without depending on other email providers. -
7
GenMail
Genspark
GenMail is an AI-assisted email and calendar client for people who want to manage multiple mailboxes in one workspace. Desktop and mobile apps connect Gmail, Outlook/Microsoft 365, iCloud, NAVER, Yahoo! JAPAN, LINE WORKS, and other accounts that support IMAP/SMTP, with provider-specific limitations. It combines a unified inbox, folders and search with AI inbox triage, message summaries, reply drafts based on the user's writing style, follow-up suggestions, scheduled sending, and natural-language email search. A unified calendar brings together supported connected calendars and includes event creation and RSVP tracking. Users can review and edit AI-generated drafts before sending; account-based AI features consume Genspark credits. GenMail is available for macOS, Windows, iOS, Android, and on the web, while connected mail remains with its email provider.Starting Price: Free -
8
eSoftTools IMAP Backup & Migration Software
eSoftTools Software
eSoftTools IMAP Backup and Migration Software is a professionally advanced and powerful IMAP email backup tool that helps users securely back up, download, or migrate emails from any IMAP-supported account. With its simple graphical interface, it becomes a user-friendly application to adopt and use for IMAP email backup and migration in more than 15+ file formats and popular cloud email platforms like Office 365, Gmail, Google Workspace, Yahoo Mail, and other IMAP server accounts. This tool is proudly supports all major IMAP servers for email backup, including Gmail, Google Workspace, Yahoo Mail, Outlook.com, Office 365, AOL, Zoho Mail, GoDaddy, Hostinger, HostMonster, iPage, BlueHost, MochaHost, and all other hosting-provided company email systems. The software is fully capable to download entire mailbox or any specific date range of emails with fast scanning and secure process. Users can export emails including Outlook PST, EML, EMLX, MSG, MBOX, Lotus Notes NSF, HTML, and more.Starting Price: $99 -
9
Cloudflare Email Service
Cloudflare
Cloudflare Email Service is a cloud email platform for developers building applications, automated workflows, and AI agents. It combines outbound transactional email delivery with inbound email routing and programmable processing. Applications can send through a Workers binding, REST API, or SMTP, while incoming messages can be routed to Cloudflare Workers for validation, transformation, forwarding, and workflow automation. The service supports domain onboarding with SPF, DKIM, and DMARC configuration, and provides delivery logs and account-level controls. Developers can use it to send notifications, account and transaction messages, receive replies, process inbound messages, and connect email events to application logic. It requires Cloudflare DNS and uses the Cloudflare Workers platform for service access and billing; it is not a hosted mailbox or general-purpose email client.Starting Price: $5/month -
10
Mutant Mail
Fresent
Never miss an important email again! Manage all your email IDs in one inbox with our Email Router. Struggling with multiple Emails? Overcome the headache of managing multiple Email ids with our privacy-focused, server-side solution Mutant Mail. Problem: Imagine having 5 domains, with 5 Email IDs each (admin, support, help, legal, contact). That's 25 Email IDs. Do we want to log in to every mailbox to keep the domain persona? Answer: Receive, Reply & Send all Emails for your Domains from your free Gmail account(or any Email account) and save on Email Hosting. Skip the Email client setup headache! Forget about Credentials, SMTP, IMAP/POP for every Email id with Mutant Mail. With Mutant Mail service you can receive, send and reply all using one mailbox. Spoof-proof your Emails with complimentary DMARC Report. PGP/GPG encryption. Buffer / Batch your emails.Starting Price: $2.99 per month -
11
Yunori
FutureForge Studios
Yunori is an email client that brings existing mailboxes into one list, including Gmail, Outlook, iCloud, and IMAP accounts. Its Today view provides a morning briefing, highlights conversations needing attention, and shows who is waiting on whom. Users can ask questions in plain language across connected mailboxes, review answers with cited source emails, and draft replies in their voice; AI features can be turned off. Yunori also includes templates, outbound email through Resend, Amazon SES, or Postmark, and Agent Mail inboxes for AI agents with a REST API, webhooks, an OpenAPI document, and a TypeScript SDK. Mailbox passwords are encrypted with AES-256-GCM, and mail is not sold or used to train models. The product is designed for professionals, founders, small teams, and developers managing multiple accounts or providing inboxes for agents.Starting Price: $0 -
12
BounceLens
BounceLens
BounceLens is a browser-based email list checker for marketers, newsletter publishers, online shops, sales teams, and developers. Users can paste addresses or check a CSV list for malformed syntax, domains that do not exist or have no mail service, likely domain typos, disposable addresses, duplicate entries—including Gmail dot and plus-tag variants—and role accounts such as info@ and sales@. The checker uses public DNS information to assess domain mail configuration; it does not contact recipient mail servers or confirm whether an individual mailbox exists, so acceptable results are labeled unconfirmed rather than verified. It can help teams identify addresses that may be invalid or risky before sending or storing email lists. The product is also offered through extensions and add-ons, a self-hosted HTTP API, an MCP server, and language libraries for incorporating the same checks into other workflows.Starting Price: Free -
13
QQ Agent Mail
Tencent
QQ Agent Mail is a mailbox service from QQ Mail designed for AI agents, with an account kept separate from a user’s personal mailbox. Users authorize access through WeChat and install the QQ Agent Mail command-line tool and agent skill to connect their agents. The service lets agents retrieve mailbox details and aliases, list messages by folder or conditions such as date, unread status, and attachment presence, read message content and attachments, and search by keywords, sender, recipient, dates, or attachment criteria. Agents can compose and send messages, reply, forward, and upload or download attachments. It is intended for developers and others configuring AI agents to handle email through a dedicated account, including automated correspondence and agent-assisted email review. The published skill documentation describes a confirmation step before sending. -
14
runx
0state
runx is an open-source runtime and command-line tool for creating, discovering, and executing governed skills for AI agents. Developers can define bounded workflows, grant specific credentials and permissions, and run skills locally with their own provider accounts. Runs can pause for approval or missing input, then resume while retaining a signed receipt that can be inspected and verified. Skills can be installed from a public registry and used with compatible agents such as Claude Code, Cursor, and Codex. An optional hosted service adds managed OAuth connections, scoped grants, API-based run submission and inspection, approval handling, and receipt notarization. The CLI can also operate locally or in a self-hosted environment. runx is intended for developers and platform teams building and operating AI-agent workflows that need explicit authority boundaries and auditable execution.Starting Price: $0 -
15
Hexamail POP3 Downloader
Hexamail
POP3 Downloader is a high-performance, scalable, real-time POP3 connector for your mail server. It supports downloading and forwarding any POP3 or IMAP account email to any email server that supports SMTP or IMAP. Key Features: 100% Compatibility with all versions of Exchange 100% Compatibility with all SMTP servers End-user management via a web interface Antivirus and Antispam options IMAP Support (with folders) IMAP Push Support Gmail Support 1-minute scheduling No email size limits Microsoft Exchange integration without the need for a public SMTP server or static IP address Migrate or integrate unlimited external POP3 or IMAP email accounts into local mailboxes Continue receiving mail from legacy accounts during migration to a new mail server IMAP migration or IMAP sync between two IMAP servers Reliable, easy to install, and cost-effective solution Streamline your email integration processes and automate email downloads with Hexamail POP3 Downloader.Starting Price: $114/10 users -
16
Afterlogic Aurora
AfterLogic
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 -
17
Cigati Office 365 Email Backup Tool
Cigati Solutions
Office 365 Email Backup Tool is a prominent solution to backup and migrate Office 365 email data, including all the attachments. It can effectively save your Office 365 mailbox in MSG, JSON, HTML, EML, PST, DOCX, etc. You can also shift the Office 365 mailbox to various email clients such as Gmail, Yahoo Mail, Thunderbird, IMAP, Hotmail, etc. Moreover, the tool also allows restoring the OST and PST files into the Office 365 account. The cloud storage of Office 365 gets jammed due to excessive emails and less storage. This powerful utility exports Office 365 emails to Outlook, freeing up the server space on the cloud. It includes all the mailbox items and attachments in the migration along with the emails. Cigati Office 365 Backup Tool saves mailbox data from Office 365 account to different file formats like PST, JSON, MSG, PDF, DOCM, MHTML, TXT, EML, MBOX, and so on. The users can utilize this backup to access the data in times of data crisis. -
18
EmailLabs
Vercom
EmailLabs is part of the Vercom S.A Group, which implements technology solutions in the CPaaS model. We are a cloud SMTP server infrastructure: Cloud SMTP & Email API. With years of experience in sending to the most informed senders, we can make a measurable contribution to building email reputation and improving deliverability. We take care of standardization and security of both marketing, transactional and system messages of our customers. Thanks to the in-depth knowledge of our experts, we are able to prepare the infrastructure to ensure appropriate throughput and increase the sending speed for any market and any mailbox provider. Plug EmailLabs into your transactional sends - start sending in less than 5 minutes.Starting Price: Free -
19
SuperMailOS
SuperMailOS
SuperMailOS is managed business email on your own domain for small teams. You bring your domain; SuperMailOS runs the mail server and handles deliverability — SPF, DKIM, DMARC, IP reputation, and warmup — so your email lands in the inbox, not the spam folder. Setup takes minutes: verify your domain with one-click DNS on Cloudflare, DigitalOcean, and other providers (or guided copy-paste on any registrar), invite your team, and start sending. Every person gets a real mailbox; aliases like hello@ and support@ are unlimited and free. Webmail is as simple as Gmail — threads, instant search, keyboard shortcuts, labels, dark mode — plus IMAP and SMTP for any mail app, and a live deliverability dashboard showing your mail landing. Flat pricing per mailbox: Pro $3/mailbox/month annually (10 GB, 3 domains), Business $5 (30 GB, unlimited domains), custom at 50+. 14-day free trial, no credit card.Starting Price: $3/month per mailbox -
20
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. -
21
MacSonik Gmail Backup Tool
MacSonik
Gmail Backup Tool for Mac is a perfect utility that effortlessly creates the backup of Gmail mailboxes and saves it to a different format like PST, PDF, MBOX, MSG on macOS. Even the application directly import Gmail emails to Office 365, Yahoo Mail, Hotmail, IMAP, etc. It allows users to backup the emails from the Gmail account on MAC OS X. Import Gmail emails to Yahoo, Thunderbird, Amazon Webmail, Icloud, Zoho Mail, etc. Option to set up a backup schedule of Gmail emails. It privileges a feature to free up the server space after the backup of emails. The maximum number of users are looking for a solution to backup their complete Gmail mailboxes in PST formats on a mockup of their MacOS. Here, Gmail Backup Tool for Mac is a top-rated application that helps users mail mailboxes in PST format. Gmail Backup Tool for Mac allows users to import their emails from Gmail to another Gmail account without losing a single piece of data.Starting Price: $49 one-time payment -
22
Developermail
Developermail
You should be in full control over your mailbox. Developermail provides mailboxes that can be configured as if they were self-hosted. Including things like forwards, aliases, catchalls and sieve filters. So start thinking about optimizing your mailbox and forget about time consuming server adminstration. Every mailbox comes with calendars, an address book and reminders. Developermail integrates perfectly into your daily developer life. All configuration is done in YAML files which are stored in your private git repository on our servers. Simply "git clone" and "git push" to update configration settings. We value security and privacy like you do. Developermail uses battle tested encryption technologies in order to keep your data safe. We will never sell your private data nor share it with third-parties for marketing purposes. -
23
Cigati Mail Migration Tool
Cigati Solutions
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 -
24
AgentMail
AgentMail
AgentMail is an API-first email platform designed to give artificial intelligence agents their own fully functional email inboxes, enabling them to communicate, send messages, and participate in email conversations autonomously. Instead of building on traditional email providers created for human users, it provides programmatic inboxes that can be created and managed directly through an API, allowing developers to assign email identities to AI agents in the same way a human would have a Gmail or Outlook account. Each agent receives its own inbox and email address, which can send, receive, and reply to messages while maintaining threaded conversations and persistent message history. It enables AI agents to read and interpret incoming emails, extract structured information from messages, and automatically generate responses or trigger workflows based on the content of the conversation.Starting Price: $20 per month -
25
emailcampaign.ai
Email Campaign LLC
Most cold email tools assume the mailboxes, domains and DNS records already exist and already authenticate. emailcampaign.ai starts one step earlier. A daily sending target becomes a priced build, and one approval registers the sending domains, creates the mailboxes on Google Workspace, Microsoft 365 or dedicated servers, writes SPF, DKIM and DMARC and verifies every record against public resolvers, and warms each mailbox for two to three weeks before the first campaign. The same platform then runs the outreach: sequences within per-mailbox daily caps, a unified inbox that attributes each reply to the send it answers, reply classification, and inbox placement tests at Gmail and Outlook. For agencies a second product sits inside the first: a webmail on each client's own hostname, where the client's administrator connects a Google or Microsoft mailbox without sharing a password, masks addresses by policy, approves outbound forwarding rules and reviews deleted mail.Starting Price: $39/month -
26
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. -
27
SMTP Senpai
MailSenpai
SMTP Senpai is MailSenpai's EU-hosted SMTP relay and REST email API for password resets, order confirmations, notifications and website forms. Connect via SMTP on port 2525 or 587 with STARTTLS, the REST API, or a form endpoint for static sites. DKIM signing uses your verified sender domain, with SPF/DKIM/DMARC checks and automatic suppression of bounced addresses. The permanent free plan includes 5,000 emails per calendar month, up to 200 per day and 30 in the preceding hour, one verified sender domain and 7-day sending logs. No card or expiry. Paid annual plans start at EUR 12.90 per month plus VAT for 10,000 emails per month and 90-day logs. An email report is sent weekly on Monday. Official WordPress and Drupal plugins and open-source SDKs support integration. Written support is available in English and Italian. MailSenpai is the separate newsletter and email marketing platform.Starting Price: Free -
28
MailInput
Devro LABS
This email verification tool actually connects to the mail server and checks whether the mailbox exists or not, wiping out disposable email addresses from your email list. This email verification tool actually connects to the mail server and checks whether the mailbox exists or not. Email Checker is a simple tool for verifying an email address. It's free and quite easy to use. Just enter the email address and hit the verify button. Then it tells you whether the email address is real or not. It extracts the MX records from the email address and connects to the mail server (over SMTP and also simulates sending a message) to make sure the mailbox really exists for that user/address. As it uses our unique set of data, the Email Verifier can return a result even where other standard verification tools fail. Our validation process has multiple threads, email format, domain information, server status, and email type.Starting Price: Free -
29
Orbit by Noveum
Noveum
Orbit by Noveum is a free, open-source task manager for people and AI agents. It brings realtime issues, boards, sprints, projects, documents and files into shared workspaces, with keyboard-first navigation. Use the hosted application or self-host the Apache-2.0 application with Docker, PostgreSQL, Redis and S3-compatible storage. AI clients connect to its remote MCP server using Streamable HTTP and workspace-scoped OAuth. Users sign in to Orbit and approve access; no API key is required. The complete application source and MCP client connection manifests are publicly available on GitHub.Starting Price: $0 -
30
EdbMails
EdbMails
EdbMails is an all-in-one recovery and migration software supporting EDB to PST conversion, Exchange migration from offline EDB, Live Exchange server migration, Office 365 migration, IMAP migration, OST and PST recovery. EdbMails is a powerful software solution designed for Exchange Server and Office 365 migrations, EDB to PST conversions, and mailbox recovery. It allows businesses to recover data from corrupted or offline Exchange EDB files, seamlessly convert mailboxes to PST files, and migrate mailboxes to Exchange or Office 365. The platform offers a user-friendly interface, fast and secure migrations, and the ability to perform incremental migrations to avoid duplication. EdbMails also supports public folder and archive mailbox migrations, ensuring businesses can transfer all their data without downtime or data loss. -
31
Unicorn Panel
Unicorn Labs LLC
Unicorn Panel is a self-hosted, multi-server web hosting control panel built for hosting fleets. One Primary panel manages any number of workload hosts, so you can provision and monitor every website, database, mailbox and DNS zone from one place, with no per-server logins. Every site runs in its own container with its own user and limits. Pick a web engine per site (Sleipnir, NGINX, Apache or OpenLiteSpeed) and any PHP version from 5.6 to 8.5. Databases include MariaDB, MySQL, PostgreSQL and Mimir. The Hermes mail suite includes spam filtering and Roundcube webmail, and a WordPress toolkit handles updates and logins. Upgrade server roles and the panel itself across the whole fleet in one click. Includes fleet-wide malware scanning, a firewall, per-resource backups with selective restore, and white-label branding for resellers. Built on Alpine Linux and utilizing Podman for both amd64 and arm64 architectures, the platform is equipped with a REST API and CLI. Free for 2 servers.Starting Price: $5/month -
32
MailJerry
MailJerry
Are you considering moving your emails but feel uncertain about how to proceed? MailJerry is here to simplify your email migration process with its secure and efficient management. With MailJerry, transitioning your emails and mailboxes has never been easier! KEY FEATURES: + Flat Rate Email Migration: Migrate unlimited mailboxes without any data volume limitations. + Bulk Migration: Migrate unlimited mailboxes with the convenient bulk migration including CSV upload. + IMAP Sync: MailJerry keeps your accounts synchronized, even after the migration is complete. + Duplicate Prevention: MailJerry identifies existing data in your account to prevent duplicates from occurring. + Mailbox Health Check: This feature ensures that your new mailbox is ready to accept incoming emails. + Complete Security: Your privacy is a top priority; the application neither accesses nor stores your information. + Direct Cloud Migration: There's no need to download or upload your data!Starting Price: $14.90 per month -
33
Dovecot
Dovecot
Dovecot is an excellent choice for both small and large installations. Dovecot is among the best performing IMAP servers while still supporting the standard mbox and Maildir formats. The mailboxes are transparently indexed, which gives Dovecot its good performance while still providing full compatibility with existing mailbox handling tools. Dovecot is standards compliant. Dovecot passes all IMAP server standard compliancy tests while most other servers fail many of them. Dovecot’s indexes are self-optimizing. They contain exactly what the user’s client commonly needs, no more and no less. Dovecot is self-healing. It tries to fix most of the problems it notices by itself, such as broken index files. The problems are however logged so the administrator can later try to figure out what caused them. Dovecot tries to be admin-friendly. Common error messages are made as easily understandable as possible.Starting Price: Free -
34
BashEmail
BashPilot
BashEmail protects hosting mail servers from incoming spam and malware while detecting outgoing abuse, helping keep mailboxes clean and protect sender reputation.Starting Price: $20/month -
35
SharedConX
peerfect.systems Ltd
SharedConX by peerfect.systems AG automates the complete permission management for shared mailboxes in Microsoft Exchange and Outlook. Instead of manually assigning access rights per user, SharedConX controls everything via security groups — Full Access, Read Permission, Send on Behalf and Send As — automatically and in real time. When team structures change through onboarding, offboarding or role changes, permissions are updated instantly with zero manual intervention. Every change is automatically logged and audit-ready, making compliance with ISO certifications and data protection requirements straightforward. SharedConX integrates directly into existing Exchange environments — On Premises, Hybrid and Exchange Online — with no downtime during rollout. Designed for IT teams in companies with 50+ employees. Scales to 10,000+ mailboxes. From €1.50 per shared mailbox per month.Starting Price: EUR1.5/Shared Mailbox/Month -
36
Unipile
Unipile
Unipile is a unified API designed to integrate multiple communication channels, messaging, email, calendar, and more, into your software application. It provides over 500 endpoints that enable developers to connect platforms such as LinkedIn, WhatsApp, Instagram, Gmail, Outlook, and IMAP into a single unified inbox. With Unipile, you can send and retrieve messages across channels, manage calendars (Google/Outlook), sync conversations in real time, and maintain full historical context across channels. The API supports functions such as starting chats, retrieving message threads, scheduling events, and connecting profile data, all through the same interface. Use-cases include ATS/CRM software publishers, outreach tools, no-code builders, and AI agent platforms, anywhere multi-channel communication needs to be embedded into an application. Unipile also emphasizes rapid integration, developer-friendly documentation, and live support.Starting Price: €49 per month -
37
Conductral
KNAPP Consulting
Conductral is a self-hosted workload automation (job scheduling) platform for data centres and IT operations. Jobs, dependencies, calendars and file transfers are planned and monitored centrally – across sites, servers and tenants. Key features: - Control-M import: read existing exports (jobs, folders, calendars, dependencies, variables), dry-run with coverage report, diff until cutover, parallel operation and migration acceptance - Composer: graphical editor for jobs and flows, versioning, audit log - Overwatch: live monitoring, day plan, SLA early warning, alerts and reactions (mail, webhook, follow-up job) - Maestro: AI assistant that drafts proposals – a human confirms, nothing changes automatically - Self-hosted on Linux or Windows, PostgreSQL, no cloud required, signed release packages (SBOM) - Licensing per production environment based on active job definitions; agents, tenants, users and test environments included -
38
EmailPal
EmailPal
EmailPal is cold email infrastructure built for outbound teams and agencies. It handles everything between buying a domain and delivering an email. You can register domains or bring your own, and EmailPal sets up SPF, dual-key DKIM, DMARC and MX records automatically. Mailboxes are provisioned in bulk with SMTP and IMAP credentials ready to use. Built-in warming sends to real Gmail, Yahoo and AOL accounts, and a mailbox is only marked campaign-ready once measured inbox placement proves it. You can also lease pre-warmed inboxes on aged domains and start sending the same day. Deliverability is managed automatically, with hourly reputation scoring per provider and automatic quarantine and recovery of problem addresses.Starting Price: $69/month -
39
OpenText Core Email Continuity
OpenText
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. -
40
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.Starting Price: Free -
41
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. -
42
MacSonik GoDaddy Email Backup Tool
MacSonik Software
MacSonik GoDaddy Mail Backup Tool is the most trustworthy tool that helps to back up GoDaddy Emails to multiple file formats. The tool can back up complete Mailbox content including inbox, outbox, sent box, drafts, trash, archives, and more. The GoDaddy Email Backup Tool has many prominent features that facilitate a quick and secure migration of GoDaddy emails to different email clients like Office 365, Gmail, Thunderbird, AOL Mail, Hotmail, Yahoo Mail, IMAP, Opera Mail, Zoho Mail, Yandex Mail, Live Exchange, iCloud, GoDaddy email, HostGator email, Amazon Workmail. It helps you to migrate email and other data from an Office 365-configured GoDaddy account. Moreover, it also gives you an option to Skip Duplicate Emails. The Date Range filtering option of this tool helps to filter emails between specific dates. In this feature, you can enter the start and end date of your choice and transfer data between those dates. Migrating with/without attachments is another unique feature of this sofStarting Price: $49 -
43
OpenText MailStore Cloud Archive
OpenText
OpenText MailStore Cloud Archive is a cloud-native, SaaS-based email-archiving solution designed for small and medium-sized businesses. It supports virtually all common email systems, including Microsoft 365 (Exchange Online), on-premises Microsoft Exchange Server, Google Workspace, as well as generic IMAP and POP3 servers, and can archive single or multiple mailboxes, including shared or group mailboxes. It offers complete archiving through journaling (capturing emails before delivery) or mailbox synchronization (including folder structure), with deduplication, support for IRM-protected messages, non-delivery reports, and the option to remove archived messages from the live mailboxes. All archived emails are stored in a tamper-proof manner: they remain authentic copies identical to the originals, protected with strong encryption, digital signatures, and legally compliant audit logging.Starting Price: $259 per year -
44
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. -
45
MailsSoftware OST to PST Converter
MailsSoftware
MailsSoftware OST to PST converter is a trustworthy solution to repair corrupted OST file data and export Outlook OST to PST, EML, MSG, and MBOX file format. An Outlook is world’s best email desktop client to send and receive the emails, calendars, task, contacts in OST and PST file format. An OST file creates when the email account is configured with MS Exchange server and cache exchange mode is checked. The OST file stores complete mailbox data in structured format. Sometime the OST file becomes unreachable or unable to open due to any reason like Virus Attack, Hardware problems, Modification in MAPI address or Exchange server crashed down etc. Then there is not any method to open and view OST file mailbox data. You have to get third-party software to make OST file readable. Download MailsSoftware OST to PST tool to recover highly corrupted Outlook OST file data along with complete mailbox data.Starting Price: $49 -
46
Virola
Virola Messenger
Virola Messenger is a secure team collaboration tool. It offers functionality that helps to bring distributed teams together and organize company workflow within one system. Virola Mesenger offers the following: - unlimited private and group chat rooms - possibility to create read-only news channels - possibility to create discussion boards - reactions to messages, mentions, replies, and discussion threads - files transfer - permanent chat history that is always available - flexible search - media files playback and preview - continuous voice and video meetings - meetings recording - issue tracking with task board - screen sharing and remote control - flexible permission framework Both self-hosted and cloud servers are available. Client apps for major desktop and mobile operating systems are available.Starting Price: $22 per 11 users / month -
47
Wren
Wren
Wren is an email signature and banner campaign platform for small teams (5–100 people). Pick from 20 professional templates with a live preview — teammates join via one link and paste their signature into Gmail, Outlook, or Apple Mail themselves. Wren never needs access to your mailbox or email server. Launch a company-wide banner campaign once and it appears under every email your team sends, swappable in one click, with click tracking. Flat pricing instead of per-seat fees. EU-hosted and GDPR-friendly. Free for one person forever; free signature builder with no account needed; 14-day Team trial, no credit card.Starting Price: $99/month/50 users -
48
NOSA Desk
NOSA Studio Ltd
NOSA Desk is a desktop app for small businesses that run on email. It reads the classic Outlook mailboxes and folders you connect, on your own Windows PC. Ask in plain words, for example "Who is waiting for my reply?" or "What is on tomorrow?". Desk answers with the source next to it, and one click opens the email. It also shows deadlines, promises and open replies on one page. You decide what becomes a task or appointment. NOSA never sends, moves or deletes anything on its own. NOSA AI is included: your question and the selected text passages go through our AI service to Claude by Anthropic. No telemetry by default. Works with classic Outlook and IMAP mailboxes such as GMX, Bluewin and IONOS. Not tested yet: new Outlook, Outlook.com, Microsoft 365, Gmail. Windows 10 and 11. CHF 19 per person per month, NOSA AI included. 14 days free, no account, no credit card.Starting Price: CHF 19 per person per month -
49
TaskBridge
TaskBridge
TaskBridge is self-hosted help desk and ticketing software for organisations that want support data on their own infrastructure. It is delivered in a Docker container under a one-time commercial internal-use licence, with full source code included and unlimited agents and end users. Teams can manage support requests through email and the application, prioritise and categorise tickets, assign agents and track resolution. Dashboards and reports help monitor support activity. Administrators can configure roles, permissions, departments and ticket categories. TaskBridge is proprietary software, not open source, and customers are responsible for operating their hosting infrastructure.Starting Price: €4,499 one-time -
50
Ployz
Ployz
Ployz is an application deployment platform for developers and teams that run applications on Linux servers they rent or manage. It provides a hosted dashboard, command-line interface and MCP tools for connecting servers, deploying applications from Git repositories, and managing services across one or more machines. Ployz can build supported languages without a Dockerfile or deploy container images, create preview environments, and provision PostgreSQL, MySQL, Redis and MongoDB databases. Applications can reference linked service credentials, communicate over private networking, and expose selected domains with SSL. The platform provides deployment logs and supports self-hosting the Ployz control plane on Linux using Docker Compose. Ployz is intended for developers and small teams who want deployment workflows while keeping application workloads on infrastructure they control.Starting Price: $0
