> The only way a sender can tell for sure their e-mail was delivered is to have tracking links Thats not true. Both spammers and legitimate email delivery serv

> The only way a sender can tell for sure their e-mail was delivered is to have tracking links Thats not true. Both spammers and legitimate email delivery services have hundreds if not thousands of accounts at the major email providers that they seed into their lists. As they are delivering email they periodically check their own accounts to see if mail is ending up in the inbox or the spam folder. You can also request a "Feedback Loop" from major email providers that will forward spam complaints from your network back to you.