Alternatives to SquareOne for all platforms with any license

  • 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

  • Inky icon


    End-to-End Encrypted Email that is a Delight to Use, on all devices, with all email accounts.

    Commercial Mac Windows Android iPhone Android Tablet iPad

  • 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

  • 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

  • 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

  • Unibox icon


    Unibox is a people centric email client that organizes your messages by person. It avoids having email like a to-do list. Features:...

    Commercial Mac

  • 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

  • SlideMail icon


    Making email better through artificial intelligence.

    Free iPhone

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  • MailTamer icon


    Don’t get buried in mountains of emails and let them get control of you and your inbox again! Slice, dice and shred your way to email...

    Commercial iPhone iPad

  • 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

  • ProfiMail icon


    ProfiMail is a powerful email client for mobile phones. It allows you to read your mail on the go, and send text with attachments...

    Freemium Windows Mobile Android S60 Android Tablet

  • Taskbox - Mail icon

    Taskbox - Mail

    Your inbox is already a task list - make it a great one. Taskbox allows you to manage your tasks and todos where they already are --...

    Commercial iPhone

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