Can someone find out who you are talking to online or read your emails from their computer?
403804
Well, If they sent you an e-mail, they could have loaded spy-ware or a virus onto your computer, and be accessing it through that (which is illegal). They may also know your e-mail address and password, and just log into see it (if you told them your password, not illegal, if you didn't, illegal).\n\nI would recommend just creating new accounts, and DO NOT use Microsoft Outlook, which is often how spy-ware reads your e-mail. Just create a new account, and clear your browsing history after logging out of your account.\n\nHow to delete Browsing History:\n\nFor Internet Explorer 6.x:\n1)  Go to Tools, then select Internet Options.\n2)  Under the General Tab, select Delete Browsing History.\n3)  Click Yes when the confirmation window appears.\n4)  Voila! Gone!\n\nFor Internet Explorer 7 Beta 2 Preview:\n1)  Press ALT+T, then D\n2)  Select Delete All, then OK\n3)  Voila! Gone!\n\nFor Mozilla Firefox:\n1)  Press ALT+T, then O\n2)  Go to the Privacy Section\n3)  Under the History, Saved Forms, Download History, Cookies, and Cache tabs, click Clear ___ \n4)  Voila! Gone\n\nHope this Helps!
351124
with reverse mail search, you can get to the pc from where the mail was sent and then, hopefully with some help from the admin of that system or the ISP, you could find the person using the pc at that particular time. \n\na bit complicated, but to be used with some professional or through the local cyber cell.
529093
Look under preferences or account options. Usually there is a place that says to let you know when your email is read.
479052
You really do not have the ability to see when someone has read an email they sent you unless you are using a corporate mail system that uses Microsoft Exchange and Microsoft Outlook and the recipient is in the same company as you are. If you're sending from a personal account or across to another mail network, it is not possible.
702582
Most email clients has option to see headers where you can see the IP address of the sender, but this does not lead directly to to exact pc where the email came out from, it may lead you back to the proxy server...ISP...etc
388705
You can, I did way back when, but you have to be sure that you know who they're emailing.  It can be very dangerous these days.
133714
there is no way for you to find that out on your end unless you will confirm it from them..but the common signs is that the the intended receipent or your emails could not be able to receive any emails from you..but detecting it on your end is impossible..
57246
it can be set up with software to monitor emails passing through
277124
If you are truly talking about the windows "Net Send" command the computer of origin is part of the message and message box.  You could then find that computer and possibly find out who was signed on at the time.
381401
maybe someone is trying to hack into your email
319671
TRUE \nTHE e-mail you send can allow the recepient to know from the computer the mail was send , it works this way , it show you exact ip addresses of how it pass till it got to your computer, and with the IP address you can easily trace which county, then narrow down to which who provide the service , then the owner of the computer, actually there are so many software that can hide you also that you can never be trace , but i just don't need to mention so don't do bad , and don't cheat onlnie so you will not be found wanted \nif u send a mail to me i can track the INTERNET PROVIDER  that give you link , but there are other people that there job is to trace you down home, such as CIA ,FBI and th rest ,
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.
562579
Ahhh....you've asked the "who" question.  You can dissect the system logs and install keyloggers and other system recorders all you want, but none of those things will tell you "who" was on your computer.  All you'll know for sure is that someone was using your computer and possibly where they went online.  Those programs are only useful when you already know who is using the computer and you want to monitor their usage.  To determine the answer to the "who" question, you would need to use some sort of two-factor authentication (password plus maybe a biometric ID or something), or you would need physical surveillance such as a little video camera.  The cameras are quite popular and would definitely answer the "who" question for you.
286649
you can not see if the other person has opened a sent email but you can check that you sent it by going to sent
503248
I can assure you that we daily users are not having our emails read by the gov't.  There are though, agency computers that can pick up the URL's of computers using keywords that are of gov't interest ( terror...child porn and so on ). Hope this puts ur mind at ease about the regular daily activities.
623169
It depends on what Internet service is providing your email addresses.  Without that information, no one can answer your question.
290194
There is no way to do it. All you can get is the ip of the originating email server and even that can be faked. If you own the first email server that the message was uploaded to, then you can get the ip addy of the sender if you were thinking ahead and configured logs right and if the sender wasn't a zombie or otherwise hacked. But if you could do that, then you wouldn't be asking this question on Yahoo! Answers.