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Thunderbird vs Infomaniak Mail: catalog facts
Thunderbird	Infomaniak Mail
Free Free forever, funded by donations.	Freemium A free address with 20 GB storage is available; other Infomaniak mail plans are paid.
Windows, macOS, Linux, Android	Android
Unified inbox across every account, or each account kept separate, your choice Mail, calendar, contacts and tasks in one application rather than four	Open-source Android client Free address with 20 GB of storage and no ads
The interface carries a lot of history and can feel dense next to a webmail tab Major ESR releases have historically been disruptive for add-ons and settings	Only works with Infomaniak-hosted addresses F-Droid version lacks push notifications
Downloadable app	Downloadable app, Hosted service
Open source	Open source
License: MPL-2.0	License: GPL-3.0
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.