Mengatasi email masuk sebagai spam

cek blacklist disini
https://mxtoolbox.com/SuperTool.aspx

cek email penerima disini
https://www.mail-tester.com/

https://support.google.com/mail/answer/81126?hl=en

jangan lupa setting mx records google dan spf google.
cek supaya valid semua disini
https://toolbox.googleapps.com/apps/checkmx/check

https://community.cloudflare.com/t/spf-and-dkim-warning-from-google-but-i-already-have-the-dns-record-thats-supposed-to-solve-it/479277

https://community.cloudflare.com/t/gmail-dkim-wont-authenticate/163073

https://toolbox.googleapps.com/apps/dig/#TXT/