I used G Suite for sending emails and the problem was that my mails were in in spam because they were sent from the Google servers, some of these IP's are on the popular blacklist now. Google knows about this problem and they said: "We're trying to arrange with blacklist support, so you should wait and maybe in future all will be OK". Of course this variant I don't like.
I have a correct DKIM / DMARC / SPF records in my domains. Spam score (I used Mail Tester for testing) was always near 8/10. Because the sender IP was in ~4 blacklists.
So I decided to use the Zoho Mail hosting. I set up one of my domains and go to Zoho. But the problem is the same: my emails are going to spam (on Gmail and others mailboxes). All checks are good, spam score on Mail Tester is 10/10, sometimes sender IP was just on 1 blacklist (Mail Tester said that IP isn't on any blacklist).
Also, I opened the original message and ALL checks are 'pass'.
What can be the problem? Any suggestions?
