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Mailspring vs Axichat: catalog facts
Mailspring	Axichat
Freemium The client is free and open source. Mailspring Pro is a monthly subscription that adds…	Free Free and open source under AGPL-3.0, including the @axi.im service.
Windows, macOS, Linux	Windows, macOS, Android, iOS, Self-hosted
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	Email and XMPP chat in one conversational inbox Integrated calendar with tasks and reminders
Read receipts and link tracking are paid, and are tracking features Electron, so still heavier than a native client	Under active development, so things may break No Linux build yet
Downloadable app	Downloadable app, Self-hosted, Hosted service
Open source	Open source
License: GPL-3.0	License: AGPL-3.0-or-later
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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