When you send email mailings, some of the email addresses included may be invalid, have bounced, have been blocked by our partner, or have unsubscribed. We don't send email to these.
Why is that?
To protect our and your company's email domain, we don't send to email addresses that have bounced, unsubscribed, or been blocked by our partner.
Where can I find more information about which email addresses or people this applies to?