Emails going to spam folder in gmail

They really won't tell you. I run into problems with them from time to time, they seem to want to only talk to microsoft.com type domains and other big email domains. Which is odd because a lot of junk comes from them. Maybe they get a cut. Or maybe Gmail just wants you to use it instead of anything else. However setting up SPF records is a very good start. Alembic follows DMARC standards by using SPF which is considered a pass by pretty much everyone but does not do DKIM (mainly because it's a pain to set up on the client). A good place to start is: https://tools.socketlabs.com/dmarc/generator Also helps to do TLS encryption which requires real certs. LetsEncrypt is an excellent way to get a trusted cert on your system without paying $100's per year. https://support.google.com/a/answer/9276512 Good basic mail tester test-vckcjzcej at srv1.mail-tester.com Better advanced tester. https://www.checktls.com/TestReceiver Anyway, hope this helps. CZ