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How to Create an Email Domain in Gmail (Full Mailbox or Send-As)

Published November 1, 2024 · Updated August 26, 2026 · Guides & Tutorials

Creating an email domain in Gmail means running professional [email protected] addresses through Gmail's interface, via Google Workspace. There are two ways to do it depending on whether you need a full mailbox or just to send as your domain. Here is how to set either one up.

Two ways to do it

  • Full mailbox (Google Workspace): your domain's email lives in Gmail, with MX records pointed to Google.
  • Send-as only: keep your existing mailbox but add your domain address to Gmail so you can send as [email protected].

Setting up the full mailbox

  1. Register a domain if you do not already own one.
  2. Sign up for Google Workspace and add the domain.
  3. Verify ownership with the TXT record Google provides.
  4. Point MX records to Google so mail routes to Gmail.
  5. Create a mailbox for each team member, plus shared aliases like support@ or sales@.
  6. Publish SPF and DKIM.

The MX record is what tells the internet to deliver your domain's mail to Google — once it propagates, your custom-domain email works right inside Gmail.

Keep it organised for a team

Shared aliases (support@, billing@) let customers reach the right team, and a consistent domain builds trust with every email you send — worth setting up from day one rather than adding them later.

Tip: You need a registered domain first — buy one separately or during Google Workspace signup — before you can point MX records anywhere.

A quick verification step

After adding your MX records, use a free MX-lookup tool to confirm they resolve correctly before creating mailboxes — catching a DNS typo at this stage saves the confusion of mail silently failing to arrive later.

Note: Keep a note of exactly which MX records you added and when — useful if you ever need to troubleshoot a delivery issue months later.

Keep a written record of your domain's DNS settings before making any change — a quick reference that makes reverting an accidental mistake much faster.

Related reading: Create a Google business email account · Business email from Gmail · Email domain management
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Frequently asked questions

How do I create an email domain in Gmail?

Register a domain, add it to Google Workspace, verify ownership, point MX records to Google, and create your mailboxes.

Do I need to own a domain first?

Yes — you need a registered domain, which you can buy separately or during Google Workspace signup.

Can I make team email addresses on the same domain?

Yes — create individual mailboxes plus shared aliases like support@ and sales@ so customers reach the right people.

Can I use my domain email in Gmail without paying for Workspace?

Send-as lets you send from your domain via an existing free Gmail account, but a full domain mailbox requires Google Workspace.