MailSlurp guide agent setup Title: Mailgun Warmup: Connect Your Domain and Check Delivery Description: Connect a verified Mailgun domain to MailSlurp with a domain sending key, choose the correct region, and compare warmup activity with delivery and placement results. Canonical URL: https://www.mailslurp.com/guides/mailgun-warmup/ Markdown URL: https://www.mailslurp.com/guides/mailgun-warmup.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.