Can anyone tell me if it's possible for me to find out if a recipient has opened the mail I have sent them?
116993
While writing your message in MS OUTLOOK, open VIEW>OPTIONS and check for the type of receipt notification you want, including a "read" notification.
158177
Some e-mail systems offer a trackback, you can tell if someone has opened the message, for instance. But these only work within some limited system (say AOL mail to another AOL user). \n\nYou generally can't track an e-mail sent to another person on another system. For instance AOL mail to Yahoo, has no tracking.\n\nSome systems I have seen which allow tracking also let you know if you are being tracked. These have been messages sent on internal corporate systems, though, and I forget the details.\n\nIf you're sending some message else where it can't be tracked by you.\n\n\nHowever, if you want to know if your message is being read by others, there isn't any way to tell, but anyone with access to a mail server can read the messages. I don't worry about this with something like Yahoo mail (unless they get a request from the government), or even in large companies. \n\nBut it is quite possible that in a small to medium sized company someone is reading your mail. They are almost certainly not supposed to, but it happens. Also, if there is going to be a record of your e-mails on these servers too, and the company may be able to go back and see what you are doing if they are so motivated.
463680
u cant unless the other person replies or confirms that he has received it. Also if you do not get a return email saying thats its undelivered within an hour or so that means its delivered for sure.\nSome emails do give a Return Receipt feature where u get an email once its delivered. eg. Rediffmail.com
408707
The only way that you can find out if it is getting sent to the person you sent it to and not the group is check you groups homepage and see if its there if its not there theres no chance that they read it.
188080
Sure you can. \n\nThere is a search bar at the top of your screen type in something from either the subject line, of to whom it was sent.\n\nThough only good if you don't auto-erase your outgoing messages.
1069853
Yes, they do have the ability to monitor the contents of your e-mail (it *is* their servers).  Look at the Privacy Policy located at the bottom of every Yahoo Mail page.
529093
Look under preferences or account options. Usually there is a place that says to let you know when your email is read.
3020
Send it via registered mail, and you can then check the status on www.usps.com.
423148
http://dhvrm.blogspot.com/2006/04/confirming-e-mail-delivery.html
633561
go to "sent mail" in your inbox
255855
send them an email telling them what it is
316465
Contact the sender and ask
10876
It depends on how clever the sender was.  You can view the true heading and IP address information of the computer that sent the message by viewing the HEADER information of an e-mail.  This is usually available within your e-mail program under VIEW > HEADER.  But many spammers now a days fake information even in the header, or send from third-party machines, so it's extremely difficult to track - virtually impossible right now.
566582
Several other Yahoo products can/will do this if installed. Yahoo Messenger. Yahoo Widget Engine is cool and has a widget to notify you when mail arrives. Either one of those would probably do the trick.\n\nMail itself can't really do this for you, as it is just a web page. It only updates when you ask it to.
442845
You can't, but sometimes I send e-cards and they let you know if they have been opened. Not all do but you can try a few and see if you get that message. Send them to yourself if you need to. I use those ecards every once in awhile to find out if some of my friends and family are still alive!
727838
Dear friend \n          The answer has been sent to your maild.
967756
It would be complicated, but you could always check your 'Sent' folder and outbox for hints. Also, you could mail round your contacts and ask if they have had any odd emails from your account. And, of course if you suspect or discover something, change your password. :D