GridLink Mail
An open-source Android mail app for JMAP and IMAP/SMTP, forked from Sterna Mail and tuned for the homelab. Free, with signed APK releases available.
A calm inbox
Calendar, built in
Reading, unrushed
Forked with respect
Built on Sterna Mail under GPLv3, with GridLink’s own interface and setup flow. Mail, calendar and contacts read from a local cache; offline mail waits in a persistent outbox until the connection returns.
Automated mail, folded away
Reports and machine mail collapse into one quiet row. The inbox is for people.
Nothing phones home
No analytics, no third-party sync, no account you did not create. It talks to your server and nothing else.