Claws Mail vs Mailspring: catalog facts
 Claws Mail |  Mailspring |
|---|
|
Free Free and open source under the GPL 3.0 or later. |
Freemium The client is free and open source. Mailspring Pro is a monthly subscription that adds… |
|
Windows, macOS, Linux |
Windows, macOS, Linux |
- Opens and searches enormous mail folders without stalling
- Plugins for PGP, spam filtering, RSS and calendars ship with it
|
- Unified inbox, snooze, send later, rules and templates in the free tier
- C++ sync engine keeps memory and battery use down for an Electron app
|
- Composes plain text by default; HTML mail sending is deliberately limited
- The interface is functional and looks like it was designed in 2004
|
- Read receipts and link tracking are paid, and are tracking features
- Electron, so still heavier than a native client
|
|
Downloadable app |
Downloadable app |
|
Open source |
Open source |
|
License: GPL-3.0-or-later |
License: GPL-3.0 |
|
No account needed |
No account needed |
|
Works offline |
Works offline |
Checked September 21, 2026 | Checked September 21, 2026 |
Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.
Copy comparison link
