Open Source The Bat Alternatives
The Bat is described as '! is a secure email client software, built to protect your correspondence against third-parties'. There are more than 50 alternatives to The Bat for various platforms. The best alternative is Thunderbird, which is both free and Open Source. Other great apps like The Bat are Mailspring (Freemium, Open Source), Evolution (Free, Open Source), OpenProject (Freemium, Open Source) and Geary (Free, Open Source).
- Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. View 33 alternatives to Trojitá
- Kube is a modern communication and collaboration client built with QtQuick on top of a high performance, low resource usage core. View 30 alternatives to Kube
- A mail app for Nextcloud - Integration with other Nextcloud apps! Currently Contacts, Calendar & Files – more to come. View 39 alternatives to Nextcloud MailNo screenshots yet
- Free • Open Source
- Online
- Self-Hosted
- aerc is an email client that runs in your terminal. It's highly efficient and extensible, perfect for the discerning hacker. View 51 alternatives to aerc
- Interlink is a Mail, RSS, and Newsgroups client based on Mozilla-sourced Community Code and built on the Unified XUL Platform. View 8 alternatives to Interlink Mail & News
- Mulberry is a powerful, easy to use electronic mail (email) and calendar program that allows you to send, access, and manage email and calendars. View 34 alternatives to Mulberry
Discontinued
The project is no longer developed. Last version, 4.0.8, released in February 2007, can be still downloaded from the official website.
- Free • Open Source
- Mac
- Windows
- Linux
- Pantheon Mail is a free open source email client forked by the elementary OS community from Geary . View 48 alternatives to Pantheon Mail
- Nylas Mail Lives is a fork of Nylas Mail. View 31 alternatives to Nylas Mail Lives
Discontinued
On its github page it states it is archived and is no longer maintained.
- Free • Open Source
- Mac
- Windows
- Linux
- Self-Hosted
- nPOPuk is an ultra-small, but comprehensive, e-mail client that runs on a wide range of Windows-based operating systems View 79 alternatives to nPOPuk
- Sup is a console-based email client for people with a lot of email. View 50 alternatives to sup