BooleanSMTP clears old email logs on its own, once a day. These settings, under Settings → Logging & Retention, decide what’s kept and for how long.
- Log All Active Emails — on by default. Keeps a delivery record, visible on Email Logs, for active outgoing sends. Turn it off to stop logging those sends; simulated messages can still create log entries, and existing entries still age out on schedule.
- Log mailer resolution to PHP error log — off by default. Writes one JSON line per email to your server’s PHP error log, showing which connection and transport were chosen. Useful while diagnosing a delivery problem — turn it off once you’re done, since it adds logging overhead to every send.
- Retention Period — how long email logs are kept before BooleanSMTP clears them automatically. Choose Clear after 7 Days, Clear after 14 Days, Clear after 30 Days (the default), Clear after 90 Days, or Clear after 1 Year.
