[brokenbells]

Due to the nature of my job, its important for me to know whether the people whom i have sent e-mails to have read the mail or not.

Are there any applications or any setting in Mail that can allow me to know when the reciepeint opened his mail ?

Any help will be deeply appreciated.

[Macola]

Originally Posted by brokenbells 

Due to the nature of my job, its important for me to know whether the people whom i have sent e-mails to have read the mail or not.

Are there any applications or any setting in Mail that can allow me to know when the reciepeint opened his mail ?

Any help will be deeply appreciated.

No, since this function is entirely dependent on the server and not the client. But there are many third-party services that can accomplish this for you, check Google.