Mailspring is a fast and lean mail client that’s a new version of Nylas Mail. It’s maintained by one of Nylas Mail’s original authors, with plenty of great features and enhancements such as a new C++ sync engine that allows it to use 50% less RAM. Heavy dependencies have also been removed and the package manager rewritten for even greater speed.
- Unified inbox
- Multiple accounts (IMAP & Office 365)
- Advanced shortcuts
- Lightning-fast search
- Touch and gesture support
- Themes and layouts (including dark mode)
- Undo send
- Localized into 9 languages
- Read receipts, link tracking, and more
Download:https://sourceforge.net/projects/mailspring.mirror/files/latest/download
Source code:https://github.com/Foundry376/Mailspring