Mailspring vs Betterbird: catalog facts
 Mailspring |  Betterbird |
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Freemium The client is free and open source. Mailspring Pro is a monthly subscription that adds… |
Free Free and open source, funded by donations. |
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Windows, macOS, Linux |
Windows, macOS, Linux |
- 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
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- Fixes and features Thunderbird has not shipped, listed openly in a comparison table
- Installs next to Thunderbird and runs on the same profile, so switching back is trivial
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- Read receipts and link tracking are paid, and are tracking features
- Electron, so still heavier than a native client
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- A small volunteer project riding on someone else’s release train
- The Mac build ships in English only and needs a language pack for anything else
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Downloadable app |
Downloadable app |
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Open source |
Open source |
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License: GPL-3.0 |
License: MPL-2.0 |
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No account needed |
No account needed |
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Works offline |
Works offline |
Checked September 21, 2026 | Checked September 20, 2026 |
Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.
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