It is hard to understand the messages in ALL CAPS but I believe your problem is that you are using ALL CAPS when sending e-mail to other people. If you use ALL CAPS there are many spam filters that will block your messages as spam. Also, it sounds like you are wondering which e-mails you have sent in the past may have been blocked as spam. Unfortunately there is no way to know for sure unless the recipient tells you or your receive a bounce message with an error.
Is this the question and answer that you are looking for?
The question is hard to understand but it also looks like he wants to know if there is a way to know which particular emails didn't go through. A few years ago, I would have said readnotify.com but that isn't working right anymore.