Verify your whole sending domain with DKIM
Essential can sign your outgoing email with your own domain (DKIM), the recommended setup because every message is verified as coming from you - important as Gmail and Yahoo tighten their sending requirements.
(The simpler alternative, "Verify a single address," just emails you a confirmation link to click.) To set up the domain, choose "Verify your domain" and Essential generates a small set of DNS records for you.
Add them to your domain at your DNS host (GoDaddy, Cloudflare, and so on), then come back and click "Verify records". DNS changes can take anywhere from a few minutes to a few hours to propagate, so if the records aren't detected yet, use "Refresh" to re-check and try "Verify records" again.
Each record's status shows Pending until it's confirmed; once DKIM and the return path both verify, the card shows "Domain verified". Email delivery is handled securely by Postmark. One thing to know: once your domain is verified it locks in.
While it's active you can't switch back to single-address verification from the card. To change methods, click Disconnect first — this clears your domain verification and, unless your saved sending address is also verified on its own, returns it to unverified status. Essential doesn't swap in a separate default address: it keeps using your saved address as the sender, and until you complete verification again, email from it can fail.
Where to find it: Settings > Company > Business Profile, the "Sending email" card. (You'll need the Set up Business Profile permission to see it. If the card is missing but you need to manage sending email, contact your business's administrator to review your role.)
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