Gmail Trick for Custom Domains

Disclaimer: This is not a supported or stable workaround and should only be used for temporary purposes. This “hack” applies to domains that are not using email hosting.

Gmail trick showing how to use your domain for the reply-as email in a free Gmail account

While I have no problem with spending money on the critical part of my business which is email hosting, there are times where I have needed a temporary fix to be able to send emails through a free Gmail account from a custom domain. For this purpose, I found a workaround that makes it possible. However, because it isn’t a supported function, the settings can change at any moment when Google updates their processes.

But for the times you want to be able to implement this workaround, I’ve provided the steps to take here (still working in March 2022). We’ll assume you already have a personal Gmail account setup for email.

Step 1: Purchase and Forward Domain

Purchase your domain from a registrar (I use NameSilo). Once you’ve purchased your domain, set it up to forward an email address to your personal Gmail account.

Step 2: Gmail 2-step Verification

In your Google Account, set up 2-step Verification. You’ll find this in Manage Google Account when you click on your image or logo icon in the top right corner after you’ve logged into Google.

Click on Manage your Google Account button below your image icon in the top right corner.
Manage your Google Account.
  • Click on Security
  • Scroll down to Signing Into Google
  • First turn on 2-step verification (you should already be using this feature anyway)
  • Then click on App Passwords.
  • In that window, choose Other on the Select app dropdown and give it a name
  • Then click Generate.
  • Copy the password in the yellow highlighted area to use in the Gmail steps. Keep this window available for reference until you are done.
Preview of the App passwords screen in Google, with "Other" highligted to indicate the choice.
App passwords step 1.
Preview of the App passwords screen in Google, with sample name entered into the "Other" field.
App passwords step 2.

Preview of final step in App passwords with yellow highlighted password example.

Step 3: Add custom email to Gmail account

Now go to your Gmail account in your web browser…

  • Click the Gear Icon in the top right
  • Click See All Settings
  • On the Settings page, click Accounts and Import.
  • In the Send mail as: section, click Add another email address. This will open up a yellow window
  • Enter in your information: Name, Email address, and choose Treat as an alias
  • Then click Next Step
Gmail view of the gear icon and See all settings highlighted.
Gear Icon in Gmail.
Yellow pop up window with sample name and email filled in the fields.
Add another email address pop up window.

On the next window, enter these settings:

  • SMTP Server:
  • Username: your email address (from the previous step)
  • Password: The password you generated from Step 2 in the Google App Passwords generator
  • Port/Secure connection using: 465/SSL or 587/TLS
  • Send Verification
  • Confirm the email sent to your forwarding address
  • On the Gmail Settings page, click Make default next to the email address to automatically use it as your reply-as email (optional)

Step 4: Test

Test your new email address from a different email account as well as from within your gmail. I like to send, receive and reply to make sure everything is working correctly.

Cautionary Wrap up

Remember, this is a workaround. Gmail periodically changes the way it handles certain functions and that could make this hack quit working at any time. It isn’t a supported function, so when it stops, a different workaround will have to be found/implemented (if available). Google has announced that Less Secure Apps (which makes this work) will be retiring in May 2022. This will possibly end the effectiveness of this workaround. I suggest signing up for Google Workspace to take advantage of the professional resources and email functionality for your business.

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Full Disclosure: Some of the links on this page may be affiliate links to help me pay for my coffee addiction.

Image attribution:
Header Photo by Marvin Meyer on Unsplash.
Sidebar Photo by Stephen Phillips - on Unsplash.

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