> For the complete documentation index, see [llms.txt](https://learn.withessential.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.withessential.com/administration/settings/verify-your-whole-sending-domain-with-dkim.md). # 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.) ## Related guides * [Verify the email address Essential sends from](/administration/settings/verify-the-email-address-essential-sends-from.md) * [Configure the automated outreach sequence](/administration/settings/configure-the-automated-outreach-sequence.md) * [Set up your business profile: name, logo, brand color, contact, address](/administration/settings/set-up-your-business-profile-name-logo-brand-color-contact-address.md) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://learn.withessential.com/administration/settings/verify-your-whole-sending-domain-with-dkim.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.