MailSlurp guide agent setup

Title: Email Rendering QA Checklist for Gmail, Outlook, Mobile, and Dark Mode
Description: Use this email rendering QA checklist to preview final emails across clients, devices, dark mode, links, images, and release workflows.
Canonical URL: https://www.mailslurp.com/guides/email-rendering-qa-checklist/
Markdown URL: https://www.mailslurp.com/guides/email-rendering-qa-checklist.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.