How to Add Domain in Dashboard
Step 1: First of all you have to go into Server Page
then you have to click on Sender Verification link. Refer the screenshot
Step 2: click on Add New Domain and you will redirect to another which is reffering in step 3
Step 3: Now you have to add your domain (without www) and you will redirect to next page
Step 3: then you will see the DNS Records (DKIM, SPF, DMARC, MX, BIMI)
Step 4: You will See your DNS Records when you will click on DKIM, SPF, Return Path Buttons (Refering DKIM for Example)
Step 5: After updating DNS Records, you have to click on button click to verify, that will check your Domain DNS for cross verification for the Records
Step 5: If the DNS Records will propagate these will show your right Sign in the list of Domain