MailTab for Gmail Alternatives

Postbox is an email application that helps you organize your work life and get stuff done.

POP Peeper is an email notifier that runs in your Windows task bar and alerts you when you have new email on your POP3, IMAP (with IDLE support), Hotmail\MSN\LiveMail, Yahoo, GMail, Mail.com, MyWay, Excite, iWon, Lycos.com, RediffMail, Juno and NetZero accounts.

Kiwi for Gmail (formerly Gmail for Mac) turns Gmail into a full-powered desktop email client. No one wants to use Gmail in the browser on their phone, and we felt they shouldn't have to on Mac or Windows either.

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

A desktop email client for your Mac, without a browser !.

Mimestream combines your favorite Gmail features with the power of a native macOS app so you can move through your email effortlessly.

Maestro is a better mail client for Windows Phone.

Boxy 2 is finally here. This is a minimal and powerful e-mail client you’ll fall in love with, and it’s been rebuilt from the ground up with new features and themes, a thoroughly refined interface and countless improvements.

Gmail™ Panel (and Notifier) is an easy-to-use extension for your browser, which can help users to keep track of their Gmail account, while surfing the internet for other information.

Gmail™ Notifier is an open-source project that notifies you about incoming emails from all your Google Mail accounts and labels.