Customize Standard Send Email Screen

[Saikishore]

Hello All-

Today when we send email's through salesforce using standard salesforce "Send Email" button on contact along with any attachments there is no way to capture the attachment that has been sent. 

I have a requirement where client would like to have a additional check box on send email screen and when checked, the attachment should be saved as an attachment to the contact's attachment related list. 

As per my understanding I have to code the complete send email screen using visualforce and I wanted to know if anyone has any ideas around my requirement and if possible any VF code or any link which is similar to standard send email screen for me to start.

Any help on this would be really appreciated. 

Thanks!