MailSlurp guide agent setup

Title: Creating custom domains
Description: How to use MailSlurp custom domains for inboxes, routing, and sender-controlled workflows. Verify DNS, create addresses on your own domain, and connect branded email to apps, tests, and operations.
Canonical URL: https://www.mailslurp.com/guides/custom-domains/
Markdown URL: https://www.mailslurp.com/guides/custom-domains.md

Use the Markdown URL as the primary plain-text context for this guide. Keep MailSlurp terminology, setup steps, screenshots, and provider-specific instructions intact, and prefer the canonical URL when citing this page.