Apps for all platforms with any license

Platforms

Desktop

Mobile

Tablet

Web / Online

Indie / Classic

Show 29 less popular platforms
  • Thunderbird

    Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.

     

    Free Open Source Mac Windows Linux BSD PortableApps.com Haiku

  • Microsoft Office Outlook

    Part of the Microsoft Office Suite, Outlook is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.

     

    Microsoft Office Outlook icon

    Commercial Mac OS X Windows Web Android iPhone Android Tablet Windows Phone iPad ... Apple Watch Android Wear

  • Mailbird

    Mailbird is more than just another email client - It's an all-in-one communication platform for email, contacts, calendar, apps, task management, video meetings and much more. Try it free, today.

     

    Mailbird icon

    Freemium $ $ $ Windows

  • Inbox by Gmail

    Built on everything that we've learned from Gmail, Inbox is a fresh start that goes beyond email to help you get back to what matters. Bundles, because some messages just belong together. Promotions are now neatly organised.

     

    Inbox by Gmail icon

    Free Web Android iPhone Chrome OS iPad Chrome

  • Apple Mail

    There’s big news attached. The best way to manage email on a Mac gets even better with OS X Yosemite.

     

    Apple Mail icon

    Free Mac OS X iPhone iPad

  • eM Client

    eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts and chat.

     

    eM Client icon

    Freemium Windows

  • K-9 Mail

    K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable...

     

    K-9 Mail icon

    Free Open Source Android Android Tablet

  • SeaMonkey

    The SeaMonkey project is a community effort to develop the SeaMonkey all-in-one internet application suite. A lighter alternative to Mozilla Firefox.

     

    SeaMonkey icon

    Free Open Source Mac OS X Windows Linux BSD PortableApps.com

  • Glip

    Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where your conversations are, so you always know what your team is doing and what needs to get done next.

     

    Glip icon

    Freemium Mac OS X Windows Web Android iPhone Android Tablet iPad

  • Evolution

    Evolution is the official personal information manager and workgroup information management tool for GNOME. It combines e-mail, calendar, address book, and task list management functions.

     

    Evolution icon

    Free Open Source Linux BSD S/MIME GNOME OpenPGP

  • Postbox

    Postbox is an email application that helps you organize your work life and get stuff done. It has all the elegance and simplicity of Apple Mail, but with more power and flexibility to manage even the most demanding workloads.

     

    Postbox icon

    Commercial Mac OS X Windows

  • Yandex.Mail

    Yandex.Mail is a free email service that is also one of the most popular mail services in Russia. Yandex.

     

    Yandex.Mail icon

    Free Web Windows Mobile Android iPhone Java Mobile S60

  • Yahoo! Mail

    Web-mail with a terabyte of free storage space & spam protection. Yahoo! Mail offers grouped conversations, themes, powerful search options, Dropbox integration for attachments, http://alternativeto .

     

    Yahoo! Mail icon

    Free Windows Web Android iPhone Windows S Android Tablet iPad Kindle Fire

  • Mailpile

    Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.

     

    Mailpile icon

    Free Open Source Mac Windows Linux Web Self-Hosted OpenPGP

  • RetroShare

    RetroShare is a open source cross-platform, private and secure decentralized communication system. It lets you to securely chat, share photos, videos, and more, using https://alternativeto .

     

    RetroShare icon

    Free Open Source Mac Windows Linux BSD OpenSSL OpenPGP

  • Opera Mail

    Opera Mail powerfully organizes, indexes, and sorts your messages. It has spam filtering (both automated and Bayesian), supports POP3 and IMAP, newsgroups as well as Atom and RSS feeds.

     

    Opera Mail icon

    Free Mac OS X Windows PortableApps.com

    • Discontinued Opera Mail seems to be no longer updated, but you can still download it from: http://www.opera.com/computer/mail
  • Claws Mail

    Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features Extensibility ...

     

    Claws Mail icon

    Free Open Source Windows Linux BSD

  • Sparrow

    Sparrow is a minimalist mail application for Mac. It was designed to keep things simple and efficient. No fancy stuff here... just your mail and nothing else.

     

    Sparrow icon

    Commercial Mac OS X iPhone

    • Discontinued Sparrow was acquired by Google back in 2012. In February 2015 Google removed Sparrow from both the Mac App Store and iOS App Store
  • Zoho Mail

    Zoho Mail is a webmail service built with the needs of a modern business in mind. It provides features for business users to communicate effectively while catering to the customization and mailbox management needs of IT administrators.

     

    Zoho Mail icon

    Freemium Web Android iPhone

  • Geary

    Geary is an email application built for GNOME 3. It allows you to read and send email with a simple, modern interface.

     

    Geary icon

    Free Open Source Linux BSD GNOME

  • Windows Live Mail

    Windows Live Mail (formerly named Windows Live Mail Desktop) is a freeware email client from Microsoft. It is the successor to Outlook Express on Windows XP and Windows Mail on Windows Vista.

     

    Windows Live Mail icon

    Free Windows

    • Discontinued The program is no longer supported and downloadable, together with https://alternativeto.net/software/windows-live-essentials/ . Existing installations may continue to work, anyway some email service providers have moved to newer email protocols for improved security and reliability and they may no longer work with Windows Live Mail.
  • Nylas Mail

    Nylas Mail is an email client designed to be friendly and easy to use but also powerful and highly extensible.

     

    Nylas Mail icon

    Free Open Source Mac OS X Linux Web Self-Hosted

    • Discontinued On September 6, 2017 the company announced that customer support for Nylas Mail was no longer provided. The project was fully open-sourced and the repository can be found on GitHub. Last version of the program, 2.0.31, released in April 2017, can be still downloaded from the official website. https://www.nylas.com/blog/sunsetting-nylas-mail-development
  • Airmail

    Airmail is a lightweight and lightning fast mail client for Mac. Feature list: Accounts: - Unified Inbox and folders - Multi Account with editable html signatures.

     

    Airmail icon

    Commercial Mac OS X iPhone iPad Apple Watch

  • Spark

    E-mail app with all the great features: swipes (long/short), snooze, add (multiple) attachments from the cloud, support for various e-mail services and more.

     

    Spark icon

    Free Mac iPhone iPad Apple Watch

  • Inky

    Inky is a secure email platform that makes end-to-end encrypted email simple and painless.

     

    Inky icon

    Commercial Mac OS X Windows Android iPhone Android Tablet iPad

    • Discontinued The company pivoted from email app provider to phishing protection: https://alternativeto.net/software/inky-phish-fence-for-office-365/