PitchBlackHat
Registered Member
- Mar 16, 2015
- 64
- 1
As seen in this bulk mailing guide by Google, they recommend adding that header:
https://support.google.com/mail/answer/81126?hl=en
According to them, if you don't add it, it's more likely they'll treat your e-mail like unsolicited and block it system-wide.
What's your experience with Gmail in this regards? And other e-mail providers?
https://support.google.com/mail/answer/81126?hl=en
According to them, if you don't add it, it's more likely they'll treat your e-mail like unsolicited and block it system-wide.
What's your experience with Gmail in this regards? And other e-mail providers?