Hi BHW!
I use SendGrid as my e-mail delivery service. I'm trying to understand how much bounces I need to get to make my IP blacklisted by recipient e-mail server. E.g. how much e-mails should I send to ATgmail.* addresses to be blacklisted by Gmail. I'm interesting in Gmail, Yahoo, Hotmail and Outlook.
I use SendGrid as my e-mail delivery service. I'm trying to understand how much bounces I need to get to make my IP blacklisted by recipient e-mail server. E.g. how much e-mails should I send to ATgmail.* addresses to be blacklisted by Gmail. I'm interesting in Gmail, Yahoo, Hotmail and Outlook.