Microsoft 365 guides and tutorials
2 practical MailSlurp resources
Articles and guides
technical
Office 365 DKIM Setup: Enable DKIM in Microsoft 365 Without Guessing the CNAMEs
Set up DKIM for Office 365 and Microsoft 365 custom domains without copying stale examples. Learn where Microsoft exposes the required CNAMEs, how selectors work, and how to verify live signing.
Read moretechnicalOutlook SMTP Settings Guide: Server, Port, TLS, and Common Errors
Learn the typical Outlook SMTP settings, how Outlook.com differs from Microsoft 365, and how to troubleshoot auth and relay failures safely.
Read more