> For the complete documentation index, see [llms.txt](https://academy.synap.ac/doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://academy.synap.ac/doc/integrations/custom-email-sender.md). # Custom Email Sender Send Synap emails from an address on your organisation's domain. This provides a more consistent sender identity for your users. {% hint style="success" %} Custom email senders are available on Pro, Business, and Enterprise plans. {% endhint %} ### Before you begin You must own the domain that you want to use. Ask your Synap account manager or support team to enable a custom sender. We will provide DNS records for you to add to your domain. These records confirm that you authorise our email provider, SendGrid, to send email on your behalf. They also support required anti-spam checks. This helps receiving email services trust and deliver your messages. ### Use domain authentication We strongly recommend authenticating the whole domain. This is the most reliable option for email delivery. Single sender verification only confirms one email address. It can be unreliable and is increasingly less trusted by receiving email services. Once you have added the DNS records, tell us. We will verify them and complete the custom sender setup. --- # 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 dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://academy.synap.ac/doc/integrations/custom-email-sender.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.