Compare software

Simple Email vs FairEmail: catalog facts
Simple Email	FairEmail
Free Free software under the GPL-3.0 license.	Free Free to download from Google Play, F-Droid or GitHub releases.
Android	Android
Unified inbox for multiple accounts Offline storage and operations	Works with nearly all IMAP providers and unlimited accounts OpenPGP and S/MIME encryption built in
Android only	No Microsoft Exchange Web Services or ActiveSync support Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

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