MailSlurp guide agent setup

Title: Email Spam Checker Guide: What to Test Before You Send
Description: Learn what an email spam checker actually evaluates, how to test headers, content, and auth together, and how to catch common spam risks before release.
Canonical URL: https://www.mailslurp.com/guides/email-spam-checker/
Markdown URL: https://www.mailslurp.com/guides/email-spam-checker.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.