What are the services for checking the quality of emails?

Question

Software testing

Please tell me what online services exist for checking sent e-mail, with scoring a letter that was sent to the service and analyzed by them.
I found only MailTester , which gives a score (the probability of getting into the "Inbox") of an email on a 10-point scale, and paid Email Client Testing from MailChimp.
Thanks in advance!

Answer 1

There is such a service for checking letters for spam spamtester.bazaaremail.com
It analyzes quite well, gives a rating and problematic words.