Register your own domain with Firefox Relay Premium

Firefox Relay Premium allows you to register your own custom domain so that you can create email masks on the fly without a phone or computer. This is especially convenient if you need to provide an email address when checking out at an establishment, and you don't want them to keep your personal email address.

How do I create a custom domain?

  1. Go to your Firefox Relay Dashboard.
  2. Click the Get domain button.
  3. Give your domain a name.
  4. A notification will appear to let you know if the domain name you chose is available.

Your domain name will look something like this:

What do I do after registering my domain?

When you visit an establishment or a website, you just need to provide whatever email username that comes to your mind accompanied by your domain handler, and it will automatically appear in your Relay dashboard once an email is sent to it.

Note: To stop receiving forwarded emails from your masks in your real inbox, disable the mask you created for a given website or transaction. To learn how to disable a mask, read Disable email forwarding - Stop receiving emails sent through your masks.

How many domains can I create with my Premium account?

You can only register one domain with your account. It is not possible to change the domain name later.

What is the difference between a regular email mask and a custom domain email mask?

Custom domain email masks work a little differently than regular email masks. You don’t need to generate an email address with your custom domain. You just provide an email address, and it will instantly be created when you provide it to a service or website.

For example, if you are signing up for a newsletter, you could enter:, and that email mask will instantly be created and added to your Dashboard. This even works when you are away from your computer, out shopping for instance. You can verbally provide, and it will instantly be created when an email is sent to it.

Do I have to create a custom mask before I can use it at an establishment?

You don't need to create a custom mask before you can use it. As soon as someone sends an email to a mask that belongs to your domain, it will be automatically generated in your dashboard.

Can I manually create a custom domain mask?

You can generate a custom domain mask from your dashboard by clicking on Generate New mask and then selecting your domain from the menu.

Was this article helpful?

Please wait...

These fine people helped write this article:

Illustration of hands


Grow and share your expertise with others. Answer questions and improve our knowledge base.

Learn More