email 
Making an Automatic Email Backup - Part 2
Adding self-signed SSL certificates to Dovecot and installing Roundcube, so the local mail archive is reachable from any browser on the network.
Making an Automatic Email Backup - Part 1
Automatically backing up a remote IMAP mailbox to a home server with mbsync, then serving the archive locally with Dovecot so any mail client can read it.