A walkthrough of setting up an offline-capable email workflow using aerc (Maildir mode), mbsync for IMAP synchronization, and Postfix for outgoing mail queuing. The author, aerc's original creator, explains why switching from aerc's built-in IMAP to local Maildirs improves robustness on flaky connections. Includes concrete config snippets for mbsync channels, aerc accounts.conf, a cron job using the moreutils 'chronic' utility, and Postfix SASL/TLS relay configuration via Migadu.
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