v1.0.542

Patch Released September 22, 2026

Fixed mail importer duplicate messages and lost nested folders, and mailbox used-quota values stuck at zero.

Mail importer: messages without a Message-ID header (some servers omit it on Sent/Draft mail) were re-appended on every import retry, creating duplicates. Deduplication now falls back to a content fingerprint (date, subject, from, RFC822 size) when no Message-ID is present, so retries no longer duplicate.
Mail importer: nested source folders (e.g. Drafts/template) were silently lost because the destination server rejects a slash in mailbox names. The importer now translates the source folder hierarchy separator to the destination one and creates parent folders, so nested folders migrate correctly.
Email mailboxes: per-mailbox used quota (used_quota_mb) was only updated by a manual refresh action, so mailboxes could show 0.00 GB while actually full. A new scheduler now recomputes every mailbox real usage automatically every 2 hours.

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