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Evolution vs Mailspring: catalog facts
Evolution	Mailspring
Free Free and open source, part of the GNOME project.	Freemium The client is free and open source. Mailspring Pro is a monthly subscription that adds…
Linux	Windows, macOS, Linux
Mail, calendar, contacts and tasks in one program Exchange Web Services plugin connects to Microsoft 365	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
Linux only Heavier than a mail-only client, and slower to start	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-2.0-or-later and LGPL-2.1-or-later	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 21, 2026

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