I was wondering.... do you know if you have been blocked? Or do your messages just go unread? i can find no reason why i should be blocked, but some of my messages go unread while im am emailing back and forth. is there any way i can tell if i have been blocked?

Not the slightest clue..

I don't know, I don't usually email people I don't normally talk to.

If the person you are writing too has blocked you they will not see your e-mails until they unblock you and therfore they have no ideal you have sent them anything. But without asking that person there is no way for you to know if they blocked you or not if they say they did not and you send them and e-mail they dont get then they need to check for they have you on block list. All they have to do is click on My Account then second row far right settings and look and click on block list and it will tell them whom they have blocked.