Hi, took the test on the website mail-tester.ru and received a score of 4.7. To be honest, I tried a variety of options: change the hosting, I wrote a bunch of lyrics, but still above the 4.7 I was not raised. In SpamAssasin gives this:
The famous spam filter SpamAssassin. Rating: -4.3.
The rating below 5 is considered spam.
-0.001 HTML_MESSAGE HTML included in message
Don't worry if we expect to receive HTML version of email message
-1.996 MIME_HEADER_CTYPE_ONLY 'Content-Type' found without required MIME headers
-1.105 MIME_HTML_ONLY Message only has text/html MIME parts
You need to add a text version of the email (text/plain)
0.001 SPF_HELO_PASS SPF: HELO matches SPF record
0.001 SPF_PASS SPF: sender matches SPF record
Great! Your SPF is valid
-0.1 SUBJECT_NEEDS_ENCODING Subject is encoded but does not specify the encoding
-1.105 SUBJ_ILLEGAL_CHARS Subject: has too many raw illegal characters
What needs to be corrected in the text, please tell me.