How can i know if my email was read or not?

Hi, I have to make a script in php.When i will send an email from my server(www.mydomain.com) to customer mail id (mycustomer@gmail.com), when mycustomer will read my mail i will get an message that mycustomer has read mail.more explain... When my mail will be delivered to mycustomer gmail.He will click on mail subject for reading purpose.Whenever he will click i will get an message or mail that mycustomer has read mail.How will i do this ? Thanks

 

This feature is already built-in. It is call "email receipt". You activate it in your email, and the recipient will click a pop up window, and they will send you another email as "receipt" to show your recipient has opened the email.

 

Thanks.
But this is depending on user click.It might be some user will not click on pop-up link.Any other concept to send message automatically ?

 

Im afraid you cant, the best you can do is what webbmaster said, email receipt

 

yeah it's not possible unless the user clicks a link within your email..

 

You could bind important information into a php generated picture and track if the picture gets loaded. Additionally use mod_rewrite to cange the imageurl from http : //yoursite. com/picture.php?id=1234 to somthing like http : //yoursite. com/picture_1234.jpeg .

 

Why would you want to bother rewriting the URL? Both ways give an indication of if an email has been read or not but there is no sure fire way of knowing as you can decline to send read receipts and likewise either block images in emails or use a text only reader.

If your looking at a marketing campaign, most will apply a loading to the proportion of confirmed reads they record to factor in those that will have read it but the read conformation method didnt apply