I tried this service right now and unfortunately, large chunks of their report require you to upgrade to a paid version to read it. mail-tester is free: https:

I tried this service right now and unfortunately, large chunks of their report require you to upgrade to a paid version to read it. mail-tester is free: https://www.mail-tester.com/ https://www.mail-tester.com/ (I'm not affiliated with either of these tools apart from using them.)