How to set up a custom tracking domain

With the help of this guide, you’ll learn how to set up your custom tracking domain and connect it to

A custom tracking domain (CTD) is a unique domain or subdomain that you can use exclusively for tracking opens, clicks, and unsubscribes in your emails. allows you to add a CTD to your email account and replace the default (shared) tracking domain with your branded domain for better deliverability.

Benefits of using a custom tracking domain include:

  • looks more secure for your recipients and ESP’s
  • a branded tracking domain instead of a generic domain
  • your sender reputation isn’t affected by other users
  • potentially grants up to 20% improvement in deliverability

Go to FAQs ⇒

Step. 1: Create a tracking subdomain

The best practice for setting up a CTD is to create a subdomain on the primary domain you use to send campaigns.

To create a subdomain, you need to add a new CNAME record in your domain’s DNS panel, also known as a domain registrar.

Before you proceed, please note that you will require admin (owner) access to add new records to the DNS.


DNS settings are usually located where you purchased your domain name, such as GoDaddy, Namecheap, or Cloudflare.

Domain management systems differ in their interfaces for each domain provider, but the basic steps to add a CNAME are similar.

Browse help resources for adding a CNAME record at some of the most popular domain providers:

If you don’t find your provider in the list above, search for “Create a CNAME record” in their help section.

Below, you will find the information you need for a successful setup. Enter the details into the corresponding fields in the CNAME record settings and save them.

Attention: does not support the HTTPS protocol for tracking subdomains. Please add a subdomain without SSL encryption enabled.
Field Value Definition
DNS record type CNAME CNAME record allows you to set tracking domain URL as the destination for your host.
Host or Name can be basically anything, e.g. track, tracking, mail, etc. Host name is the part that will be placed at the beginning of your subdomain address (e.g:

For example, if you choose a hostname “track”, then your tracking domain’s address will be

If there’s an already created CNAME record in your DNS, don’t use the same hostname twice, as it may lead to a conflict.

Value or Points To The URL of’s tracking domain.

must be

The value is meant to establish the connection between your subdomain and’s tracking domain.
TTL Leave as default Leave this field at whatever value your domain provider uses by default.

Here’s an example of how the CNAME record settings should look like:

Step. 2: Check DNS propagation

After creating a CNAME record, the DNS update typically takes effect within an hour, but it could take up to 72 hours to update globally.

You can check the DNS propagation status at DNS checker website.

  • Type in your tracking domain’s address in the search field.
  • Choose CNAME type.
  • Click the Search button.

The custom domain will be ready to use once it is connected to globally.

Step. 3: Connect your CTD to

The final step is to enter the address of your new tracking domain/subdomain into your email account settings.

  • Go to your Email Accounts list.
  • Click the Edit button next to the required email account.


  • Open Custom tracking domain section under Optional settings.
  • Enter the URL address into the tracking domain field.
  • Click the Verify button, then Save the account settings.
Tip: The URL address will have the format “”, where “track” is the hostname that you specified in the CNAME record settings.

After you’ve set up the new CNAME record, visit your new tracking subdomain address in the browser. You should see a message that looks like this:

If you receive an error message while connecting your CTD to, check the CNAME record settings and verify that you have correctly completed all the required fields.


1. What will my recipients see if I add a CTD?

The tracking domain is only visible if your recipients hover/click on any of your tracked links or if they hover/click your unsubscribe link.

2. Do I need to add a CTD for every email account I have in

The email accounts without a CTD will use default tracking domains. If you have multiple sender accounts (mailboxes) on one domain, you can add the same tracking domain for all. 

3. Do I have to create a subdomain specifically for tracking purposes or can I configure tracking on one of my existing subdomains?

On paper, you can edit an existing CNAME record and add our tracking domain as the destination (Points to or Value) for the host.

Although, we recommend adding a new CNAME to create a separate subdomain (host).

4. What if I remove CNAME record from my DNS after some time?

Do not remove CNAME record from your DNS settings, as without it your custom tracking domain won’t work and tracked links will expire.

5. Do I have to create a tracking subdomain on the domain that hosts my email account?

It doesn’t have to be a subdomain on the same domain you use to send emails through, any other domain will do as well. 

Hovewer, it’s considered better for deliverability if your tracking domain matches the sending domain.

6. Can I create a CNAME record if I don’t own the domain? 

You need admin access to domain management settings to be able to make changes to the DNS. 

Still have questions? Contact our support team at any time at or live-support chat.

Read next:

Add SPF record to your DNS to increase your domain’s reputation.

This policy improves your domain’s reputation and helps prevent your emails from being marked as spam.

Read more ⇒

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