Meridian 1.59.1

August 14, 2026

New mail arrives again while Meridian is still fetching your older history.

Fixed

• New mail could stop arriving on accounts still fetching their history — Meridian downloads your back catalogue in the background, and while that was running it never got round to checking for new messages. On a large mailbox the history walk takes days, so those accounts simply went quiet, while smaller accounts that had finished carried on normally. Fetching new mail now takes priority, and the history walk uses whatever time is left over.
• Reconnecting an account made Meridian re-download everything — routine checks on your connected accounts were wiping Meridian’s record of what it had already synced. That record is only ever kept on your Mac, so the next sync started from scratch and pulled every message down again. Those checks now leave your sync progress alone.
• Fetching history no longer re-downloads mail you already have — the history walk asked your provider for every message in a stretch of time, including ones already sitting on your Mac. It now skips those, so catching up after an interruption takes minutes rather than days.

Changed

• Steadier progress through your mail history — history was fetched in fixed three-month chunks, which meant a busy month took hours while a quiet year took seconds. Meridian now works in evenly sized batches, so progress is consistent and each step finishes quickly regardless of how busy that period was.