## Users

Desktop: Thunderbird
Android: {email} K-9 Mail + OpenKeychain ; {Calendar} Etar + DAVx5
iPhone: in this economy?

## Sysadmin

imap: Dovecot
smtp: exim or postfix
Webmail: https://roundcube.net/
Ticketing: RT
calDAV + CardDAV: Radicale
migration: https://imapsync.lamiral.info/
snapshots: https://www.offlineimap.org/