hello, i just start using roundcube mail server on the debian9 and all work fine sending and reciving mail, but the sending emails was all time recive on the spam box not the principal mail box of gmail, yahoo, hotmail..., after hours of searching i find that i need to creat an unsubscribe-link or unsubscribe-bouttom to avoid my emails receving like a spam, so how can i do that ?? or how can i set-up this on roundcube and debian9 server
you should have an unsubscribe link for mailing lists/bulk email, not personal messages. Check 'Why emails are automatically marked as spam' at https://support.google.com/mail/answer/1366858?hl=en
