Why is the inbox never shining for a poem?

Question

Fight against spam

I use the paid program Epochta Mailer, I use my smtp server from my domain. The letter is quite simple on the test for spam passed perfectly. When sending a test letter from the Epochta Mailer program, the letter gets into the inbox, but when I already do the mailing itself, the letter goes to spam. I turned to the mail tester service and this is what he knocked out for me:
Help please.