How to Get Business Email on Your Own Domain

Why a Domain Email Matters

An address like mike@mikesautorepair.com tells customers you are a real business. A free address can look like a side job. It is also harder to hand off.

A domain email belongs to the business, not to one person. When someone leaves, you still own the inbox. You can pass it on or close it.

Pick an Email Provider

Most small businesses choose one of two big services. Google Workspace gives you Gmail with your own domain. Microsoft 365 gives you Outlook with your own domain. Both include calendars, file storage and admin controls.

Your web host may also offer email. That can work for a very small team. Just know it ties your email to your website host.

Pick the one your team already knows. If everyone uses Outlook at their desk, Microsoft 365 is an easy fit. If your crew lives in Gmail on their phones, Google Workspace may feel more natural.

How Email Finds Your Inbox

Email finds you through DNS records. DNS is the internet's address book. Your domain has a set of DNS records that tell the world where things live.

The most important one for email is the MX record. MX stands for mail exchange. It tells other mail servers where to deliver mail for your domain. For Google Workspace, the MX value is smtp.google.com. Microsoft 365 gives you its own value inside its admin center.

Setup Steps

Here is the usual order. Your provider will show the exact values for each record.

1. Sign up with the provider and add your domain.
2. Prove you own the domain. This is often a TXT record the provider gives you.
3. Create a mailbox for every person who needs one. Microsoft says to add users before you change MX records, so mail keeps flowing.
4. Change your MX records to the new provider. Remove old MX records that point to the old host.
5. Add or update your SPF record. This lists who may send mail as your domain.
6. Turn on DKIM. This adds a digital signature to each message you send.
7. Add a DMARC record. Start with the policy p=none so you can watch before you block anything.
8. Set up email on phones and computers.
9. Send test messages in and out, from inside and outside your company.

One SPF Record Only

This is where many setups go wrong. A domain must have only one SPF record. If you already have one, add the new service to it. Do not make a second one.

For Google Workspace, the SPF piece is include:_spf.google.com. For Microsoft 365, it is include:spf.protection.outlook.com. A single record can hold both if you use both. It starts with v=spf1.

Our deliverability guide explains SPF, DKIM and DMARC in more depth.

How Long Changes Take

DNS changes do not show up everywhere at once. Google says it can take up to 72 hours for new MX records to be recognized. Plan your switch for a quiet time, like a Friday afternoon, and check both inboxes over the weekend.

Do Not Lose Your Old Mail

When you change your MX records, only new mail goes to the new provider. Microsoft notes that existing email stays at your old host unless you move it.

So before you cancel your old email:

• Export or migrate old messages, contacts and calendars.
• Check that every person can see their old mail in the new inbox.
• Keep the old account open until you are sure nothing is missing.

Shared Addresses Like Info and Service

Most businesses want addresses like info@ or service@. Do not share one password among the whole team. Use an alias or a group instead. Messages then land in the right people's inboxes, and each person keeps their own login.

Good Habits to Keep

• Turn on two-step sign-in for every account.
• Keep the main admin login in the owner's hands.
• When someone leaves, suspend their account instead of deleting it right away.
• Write down which company runs your email and where the DNS lives.

When Staff Come and Go

A new hire should get their own mailbox on day one. Do not hand them the last person's login. When someone leaves, change who can reach their mailbox and set up a forward to a manager. That way customer emails still get answered.

Check your user list every few months. Remove anyone who no longer works with you. Old accounts with weak passwords are an easy way in for scammers.

Getting Help

Email setup is a small job when it goes right, and a stressful one when it goes wrong. If you would like someone to handle it, T3CHS sets up business email on your own domain.

Common Questions

Can I keep using Gmail but with my business address?

Yes. Google Workspace gives you the Gmail inbox you know, but with your own domain in the address.

Will I lose my old emails when I switch providers?

Changing MX records only moves new mail. Old messages stay at the old host until you migrate them, so move them before you cancel.

How long does it take for new email to start working?

Often it is quick, but Google says new MX records can take up to 72 hours to be recognized everywhere.

Can I have two SPF records if I use two services?

No. A domain should have one SPF record. Add both services to that single record.

What is the difference between an alias and a mailbox?

A mailbox is a full inbox with its own login. An alias is another address that delivers into an existing mailbox.

Sources

1. Google Workspace Admin Help: Set Up MX Recordsknowledge.workspace.google.com
2. Google Workspace Admin Help: Set Up SPFknowledge.workspace.google.com
3. Google Workspace Admin Help: Set Up DMARCknowledge.workspace.google.com
4. Microsoft Learn: Connect Your Domain by Adding DNS Recordslearn.microsoft.com
5. RFC 7208: Sender Policy Frameworkrfc-editor.org

Last reviewed September 27, 2026.