Helping people with computers... one answer at a time.

Without installing keystroke logging or other spyware on your computer, there's no way to tell if anyone is reading your emails before you do.

How do I know if someone is opening my email before I read it, then marking it as unread?

You don't. Essentially you would have to install some kind of keystroke logging or other spyware on your machine in order to see if someone is using it when you're not around.

Article C2063 - June 14, 2004

Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

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Recent Comments
54 Comments

How much do these types of spyware run and I would LOVE to put it on my son's computer because I KNOW his wife is reading my emails to him. (She turns into a controling ....)Where can I buy these?

Posted by: bobo at February 6, 2009 5:43 AM

my emails appear to have been opened when i get to them from the website....how do i find out what ip address the email was opened at? can this be done?

Posted by: Carl at July 22, 2009 5:12 AM

folks, if you are using outlook for your email, you can assign "delegates" and give "permission" to open your outlook email. I view my boss' email daily. go to your outlook help and type in delegates. Someone probably is viewing and using your email account.

That is not true for most people using Outlook in homes and small businesses. That's a feature of Exchange Server, typically used in larger companies.
Leo
05-Sep-2009

Posted by: cj at September 3, 2009 2:50 PM

I have delegated access to my bosses inbox. Can she tell when I have read them if I mark them unread?

Posted by: Secretary at November 23, 2011 10:13 AM

@Secretary
It depends if your boss has any activity monitoring or keylogger software installed.

Posted by: Mark J at November 23, 2011 1:46 PM
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