Open Source eM Client Alternatives with feature 'Extensible by Plugins/Extensions'
The best open source alternative to eM Client is Thunderbird, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to eM Client and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to eM Client are Mailspring (Freemium, Open Source), Evolution (Free, Open Source), Geary (Free, Open Source) and Claws Mail (Free, Open Source).
- Free email application that’s easy to set up and customize - and it’s loaded with great features!. View 89 alternatives to Thunderbird
- Free • Open Source
Thunderbird vs eM ClientCannot handle google calendar by default (needs plugins). Same for contacts etc.
- Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more. View 39 alternatives to Mailspring
- Freemium • Open Source
- Arch Linux
Mailspring vs eM ClientMailspring lacks way too many features, compared to even emClient 7, let alone em Client 8. Lack of support for templates and quick replies, horrible dark theme support etc.Clean interface. Unified inbox.Mailspring has almost the same feature set as eM Client, making it a great alternative for folks used to eM Client.Mailspring is open source, free, and supports Linux as well as Windows and MacOS.