Custom Domain Email: Plan DNS, Addresses, and Ownership
Plan custom domain email with clear ownership, intentional addresses, staged DNS changes, independent sending checks, and a practical mailbox migration record.
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Custom domains
Plan custom-domain email with clear domain ownership, DNS responsibilities, address naming, mailbox provisioning, and a deliberate migration sequence.
A custom-domain address creates a long-lived naming decision. Before configuring DNS, decide who controls the registration, where renewal notices go, and how another administrator could regain access. These are part of the email plan even though they happen outside the mailbox interface.
The domain article in this collection walks through a staged setup. Use it alongside the two topic guides below: one focuses on control of the domain name, the other on the mailboxes and aliases attached to it. Draft an address register and a small migration checklist before making changes. Then test new mail and replies with a separate account so you can observe both directions.
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Related field guides
Make a specific setup decision with these practical starting points.