For each functionality, select desired implementation (ex: postfix vs exim, dspam vs spamassassin, mailpile vs roundcube, etc.)
For each implementation, select desired options and dependencies (ex: backend for email from [sqlite, mariadb, pqsql, etc.]; for migration [enter emails/passwds]; for basics [email accounts & passwords]; etc.)
Click Go in some interface.
cc @PiPeep
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Ideally, this is how it should work:
Click Go in some interface.
cc @PiPeep