Alternatives to Opera Mail for all platforms with any license

  • Thunderbird icon


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

    Open Source Mac Windows Linux BSD Haiku

  • Inbox by Gmail icon

    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...

    Free Web / Cloud Android iPhone Chrome OS iPad Chrome

  • K-9 Mail icon

    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...

    Open Source Android Android Tablet

  • Apple Mail icon

    Apple Mail

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

    Free Mac iPhone iPad

  • eM Client icon

    eM Client

    Fully functional alternative to Microsoft Outlook, including native interoperability with Exchange servers.

    Free Personal Windows

  • Evolution icon


    Evolution is the official personal information manager and workgroup information management tool for GNOME. It combines e-mail...

    Open Source Linux BSD GNOME

  • Geary icon


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

    Open Source Linux BSD GNOME

  • Claws Mail icon

    Claws Mail

    Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated...

    Open Source Windows Linux BSD Xfce

  • Sylpheed icon


    Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA). Sylpheed runs on many systems such...

    Open Source Mac Windows Linux BSD

  • The Bat icon

    The Bat

    The Bat! is a secure email client software, built to protect your correspondence against third-parties.

    Commercial Windows

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  • Newton icon


    Newton (previously CloudMagic) is a fully featured mail client available for Android, iOS and macOS. Works for watch too. It's...

    Commercial Mac Android iPhone Android Tablet iPad Apple Watch ... Android Wear

  • Polymail icon


    The most powerful platform for email productivity in a beautiful native app — on desktop and mobile.

    Free Mac iPhone iPad

  • Spark icon


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

    Free iPhone iPad Apple Watch

  • Mail Wise icon

    Mail Wise

    Mail Wise – Read Just What You Need. The best conversation threads ever. A free email client that transforms messy emails into clean...

    Freemium Android

  • Foxmail icon


    Foxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems.

    Free Windows

  • Trojitá icon


    Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. Trojitá values...

    Open Source Windows Linux

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  • Mail icon


    Windows 10 has Mail and Calendar apps already built in. With the Mail application you can now...

    Free Windows

  • ALTO Mail icon

    ALTO Mail

    Alto Mail makes managing your email easy again. Add all your mail accounts to our app (including Gmail, Outlook, Yahoo!, AOL Mail...

    Free Web / Cloud Android iPhone Android Tablet iPad

  • Becky! Internet Mail icon

    Becky! Internet Mail

    Becky! Internet Mail is an email client for Windows OS. Becky! Internet Mail supports POP3, IMAP and S/MIME as well as PGP/PGP via...

    Commercial Windows

  • Boxer icon


    Boxer is a faster, smarter, secure email app that supports your Gmail, Exchange, Outlook, Yahoo, Hotmail, iCloud, Office 365, IMAP...

    Freemium Android iPhone Android Tablet iPad

  • TypeApp icon


    TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various...

    Free Personal Android iPhone Android Tablet iPad Android Wear Kindle Fire

  • nPOPuk icon

    nPOPuk Discontinued

    nPOPuk is an ultra-small, but comprehensive, e-mail client that runs on a wide range of Windows-based operating systems

    Open Source Windows Windows Mobile

  • Simple Mail icon

    Simple Mail

    Simple Mail is a mail client for Firefox. It allows you to get notified, read and write messages for multiple email accounts inside...

    Free Mac Windows Linux Firefox

  • Aqua Mail icon

    Aqua Mail

    AquaMail is an email app for Internet and Exchange mail, for Android 4.0.3 and higher. Easy automatic setup for popular email...

    Freemium Android Android Tablet

  • GyazMail icon


    GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features.

    Commercial Mac

  • MailMate icon


    MailMate is an IMAP email client for Mac OS X featuring extensive keyboard control, Markdown supported email composition.

    Commercial Mac

  • SlideMail icon


    Making email better through artificial intelligence.

    Free iPhone

  • Mulberry icon

    Mulberry Discontinued

    Mulberry is a powerful, easy to use electronic mail (email) and calendar program that allows you to send, access, and manage email and...

    Open Source Mac Windows Linux

  • myMail icon


    myMail is the smart email app for managing all your accounts on iOS and Android. Use myMail to manage messages in your Gmail...

    Free Android iPhone Android Tablet iPad Apple Watch

  • si.Mail icon


    Lightweight E-mail client, mbox support, numerous & unique advanced options...

    Free Windows

  • EmailTray icon


    EmailTray is a smart email client and an email notifier for POP3 and IMAP email accounts, including Gmail, Hotmail, Yahoo mail and...

    Free Windows Android

  • Mailburn icon


    Mailburn is an iPhone email client that shows your conversations with real people as chats, without "Show quoted text" and...

    Freemium iPhone iPad

Opera Mail Comments


Comment by DanMan
about Opera Mail May 2015

I'd be all over this, if only it supported GPG encryption. But it doesn't so it's not an option.


Best search driven email client that's not gmail

Comment by Seth
about Opera Mail Apr 2013

Fun fact: Opera's unique search driven email interface actually predates gmail. I ended up switching back to Opera Mail (previously called "M2") after making the decision to close all Google accounts.

The contact management, import/export, and (non-existent) sync sucks, and there's no support for encryption, but aside from those drawbacks I'm pretty happy with it.

[Edited by Seth, April 05]


Not stable

Negative Comment by zamiere
about Opera Mail Oct 2012

Not yet stable enough on Ubuntu, crashing on adding gmail mailbox or login method check.