Tool

Mail Tester

mail-tester.com Free Beginner

Before you send a single cold email to a real prospect, send one to this tool. It gives you a spam score out of 10, checks your SPF, DKIM, and DMARC in one pass, and flags content and formatting issues, so you catch a broken setup on a test message instead of finding out from a prospect's spam folder.

• Get an instant spam score plus a breakdown of exactly what is wrong
• Verifies SPF, DKIM, and DMARC are actually passing, not just present
• Use it every time you change domains, ESPs, or email content, not just once