Is your email missing the inbox? It usually comes down to your domain...

https://wiki-neon.win/index.php/Blocklist_vs._Blacklist:_Are_They_the_Same,_and_Why_Your_Emails_Are_Landing_in_the_Junk_Folder

Is your email missing the inbox? It usually comes down to your domain reputation. If your spam complaint rate stays above 0.1%—that is one complaint per 1,000 emails—mailbox providers will start filtering you out automatically