Docs · Migration

Migrate your existing mail

You can move to SuperMailOS without a gap in service and without your senders noticing. The trick is ordering: bring your addresses and old mail across first, and only switch DNS once everything is in place.

Migrate without downtime

Recreate your mailboxes. Add your domain and create mailboxes matching your current addresses. Leave your MX unchanged for now, so mail keeps arriving at your old provider while you prepare.
Connect both sides over IMAP. Add the old and new mailboxes to a desktop mail client, or use an IMAP-to-IMAP sync tool.SuperMailOS’s IMAP settings are in connect a mail app; your old provider will have its own.
Copy your mail across. Copy folders from the old mailbox into the new one. Everything moves over and nothing is removed from the old side, so it stays a safe fallback. If a guided import is available in your workspace, use it; otherwise any IMAP-to-IMAP copy works.
Cut DNS across. Point your MX at SuperMailOS and update SPF (see DNS setup). New mail now lands here — DKIM signing, DMARC reporting and warm-up are already running, so there’s no reputation cold-start.
Decommission the old account. Keep it a little while to catch anything sent during propagation, then close it.

Why this order matters

Because you copy mail before switching MX, there’s never a window where messages fall between two providers. And because authentication is provisioned from the mail server’s zone before the cutover, the common self-migration mistake — switching first and landing in spam while DNS settles — simply doesn’t happen.

Keep your addresses and aliases

Recreate role addresses like hello@ and support@ as free aliases delivering into whichever mailbox should receive them — they cost nothing and are unlimited on every plan. Your senders keep writing to the same addresses throughout.

Ready to point your domain? Start with DNS setup, then deliverability & inbox placement.