Permission is the starting point.
You may not send spam, purchased-list mail, deceptive content, malware, unlawful material or messages without a lawful basis. Senders must identify themselves, honor unsubscribe requests, maintain accurate records of consent and cooperate with abuse investigations. You must not send to addresses that have unsubscribed, hard-bounced or reported your mail as spam. These are suppressed automatically and attempts to circumvent suppression, including re-importing suppressed addresses, are a breach of this policy.
