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Sorry for the newb question, I have a custom domain and have set up MX records, etc., to point to skiff.

Does anyone know how to switch these out to point to another provider, e.g., purelymail/fastmail/proton, without downtime? I mean I would not like to miss emails during the transfer. Is that even possible?

discuss

Nyr|2 years ago

You change the MX records to point to the new provider. No downtime.

You also need to take care of SPF / DKIM / DMARC, but those records are for outbound mail.