Register your own tracking domain for use with Gmail mail merge campaigns

As I mentioned a few days ago, GMass is sunsetting the program where we register domains for our users, but you can still register your own and take advantage of maximum deliverability.

Please note that you are still ENCOURAGED to set your own tracking domain up based on your organization’s domain. If you are unable to modify the DNS for your existing domain, you can register a new domain from scratch and set it up to be a tracking domain for your GMass account. Here is how you do that:

  1. Choose a domain name registrar. Our favorites are Namecheap and Hover, but feel free to use a more popular service like or GoDaddy if you’re more familiar with them. In my experience, Hover and Namecheap are simple, have intuitive user interfaces, are inexpensive, and provided good support. I would avoid
  2. Pick the domain that you want to create as your tracking domain. If your organization is ABC Company, and your existing company domain is, you might pick (if it’s available), or If the exact name isn’t available, you could pick a name like You can really pick any domain name that you like. While you can certainly pick a cheaper alternative like a .us domain, I recommend choosing a .net name because it’s shown to have the least issues with blacklistings.
  3. You don’t need any supplemental services offered by the domain registrar, like email hosting or a website. You just need the domain. You can choose the WHOIS protection if you want to protect your contact information, and most domain name registrars offer this for free.
  4. Once your name is registered, you are ready to set a CNAME record for your domain. You will find this in the “DNS Settings” of the registrar you’ve chosen. It’s easier than it sounds! You’ll need to choose the “host”, which is the word before the domain you just registered. For example, if you choose a host of “view” and you registered, then your tracking domain will be Whatever host you choose, set its CNAME to point to (it used to be but we’ve changed this now to After you’re done, your tracking domain will be host.yourdomain, or in this example, You can test the tracking domain by going to it in the web browser, and it should immediately redirect to the GMass homepage.
  5. The final step, once you know your tracking domain is working, is to apply it to your GMass account.
  1. I can understand till this point “For example, if you choose a host of “view”

    Can I make the host anything or does it need to be something specific like your used view?

  2. Hi, I use gmass with a normal gmail, but now I need to use gmass with a domain email connected to gmail client. Is it possible?

  3. I registered one subdomain and set a value for CNAME to Also I get email for tracking domain which has been assigned to my account.

    In this moment I can’t see any changes. In my campaigns sender is mail gmail account not email from my tracking domain.

    What I missunderstood?

    1. Hi J.J.,

      A tracking domain does not change the account from which you are sending from. If you’re click tracking your links in the body of your emails, the links are altered so that the GMass server is hit first to record the click, and that’s done by way of the tracking domain. Unless you’ve set up your own custom tracking domain, GMass uses shared tracking domains across accounts.

  4. I’ve just integrated with Sendgrid and setup custom domain tracking, all is good there. My question is: If I already had a campaign running with auto-follow-ups, will my tracking domain be applied to those upon sending, or have they already been assigned the standard Gmass tracking domain, in which case I would need to cancel the campaign?

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