Keep in mind that #1 - We don’t allow spam email to be sent from KnownHost servers. When you plan on conducting any legitimate sends to large email campaigns, keep in mind that you’ll need to be certain that recipients have agreed in advance (opt-in) to receiving email from you. Large sends, particularly the first time – that’s when you should give tech support a heads-up IN ADVANCE so that the team can make sure your account is configured properly and that you don’t get red-flagged for any reason.