Alternatives to Mailplane for all platforms with any license

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...
- Postbox is similar to how Outlook works. Not an email guru but I belive it uses IMAP whereas Mailplane works like a browser. Guest • Jan 2018
- Mailplane is all about Gmail, Postbox is a bit more heavy lifting vs. a sup'd up browser experience. Guest • Jan 2018
Commercial $ $ $ Mac Windows
Multiple Account support Box.com integration Built-in RSS reader Dropbox integration ... Exchange Extensible by Plugins/Extensions Support for IMAP Multiple languages Onedrive integration POP3 Support Tabbed interface Visual Programming Add a feature

140 Like
Airmail

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

Commercial Mac iPhone iPad Apple Watch
Clean design Customizable Dropbox integration Fullscreen support ... Lightweight Multiple Account support Add a feature

69 Like
Shift

Shift is an email client that makes navigating between Mail, Calendar, Drive + your favorite Apps & Extensions easy (for Gmail, Outlook.com - Office 365 &...

Freemium $ $ $ Mac Windows Linux
Unified search Multiple Account support Android Sync Cross account search ... Extensions Gmail integration Google Apps integration Apps that Sync with Google Calendar Google Drive integration Sync with Google Drive GSuite Integration Multiple Account support Outlook integration Salesforce integration Add a feature

26 Like
Wavebox

Bringing the Gmail & Google Inbox experience to your desktop in a neatly packaged app .

Freemium $ $ $ Open Source Mac Windows Linux
Gmail integration Support for Keyboard Shortcuts Add a feature

13 Like
Canary Mail

Canary is an exciting new email client for Mac that offers a full set of powerful features with one key difference - your emails are not stored on a 3rd party server. ...

Commercial $ $ $ Mac iPhone iPad Apple Watch
No features added Add a feature

11 Like
Unibox

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

Commercial Mac
Multiple Account support Add a feature

17 Like
Kiwi for Gmail

Dedicated Gmail client with clean integration of Google Calendar, Contacts, Google Drive, and Google Docs, Sheets, and Slides.

Freemium $ $ $ Mac Windows
GSuite Integration Multiple Account support Add a feature

13 Like
Mia for Gmail

Mia is a native Gmail application on your Mac's menu bar! Read and compose your emails without a browser (attachment files supported). Quick email overview (pass...

Freemium Mac
Sits in the MenuBar Multiple Account support Add a feature

3 Like
Maestro

Maestro is a better mail client for Windows Phone. With unique features like account themes, gestures, and favorites, Maestro helps you manage your inbox quickly and...

Commercial Windows Phone
Multiple Account support Add a feature

1 Like
Gmail Manager

This is a Firefox extension that allows you to manage multiple Gmail accounts and receive new mail notifications. It displays account details, including unread messages...
- Discontinued The extension is no longer updated. Last version, 0.6.4.1, released in March 2011, can be still downloaded from Mozilla Addons
Free Mac Windows Linux Firefox
Firefox Extensions Add a feature

4 Like
GMDesk

GMDesk is an application that lets you run Gmail, Google Calendar, Google Docs and Google Maps as a stand-alone application to do all your mail handling, calendar event...
- Discontinued Last version, 1.01, was released on March 2009, but it is still downloadable and usable.
Free Personal Mac Windows Adobe AIR
No features added Add a feature

1 Like
MailTab for Gmail

MailTab for Gmail is the ideal app for instantly accessing your Gmail account without having to open your web browser. Download it for free and benefit from visual and...

Freemium Mac
Sits in the System Tray Add a feature

1 Like
GNOME Gmail

Gnome Gmail is software which adds support for Gmail to the Linux Gnome Desktop. It allows Gmail to be selected as the default mail application for the desktop. Unlike...

Free Open Source Linux
No features added Add a feature

0 Like
MailPop for Gmail

We love Gmail as much as you do. That's why we created MailPop for Gmail. It's the simplest, most fluid way to access your Gmail account. After launching...
- Discontinued The program seems to be no longer updated. Last version, 1.0, released in October 2012, can be still downloaded from the Mac App Store.
Freemium Mac
Sits in the MenuBar Add a feature

0 Like
Mailbox (mac status bar)

The best Gmail client on your status bar!
- Discontinued The program is no longer updated. Last version, 1.0, released in May 2011, can be still downloaded from the Mac App Store.
Free Mac
No features added Add a feature

0 Like