Mark more than one email address primary

[KETANBHALERAO]

Hi,
My requirement is to make the Email address multiselect
Meaning, suppose I want this functionality in contact module
Then contact can select more than one email address as primary email address
So that when we send mail to these contacts mail will get send to all the email address which is marked as primary.
Need urgent help
Waiting for reply!!!!!!!!!!!

[KETANBHALERAO]

Please anyone can help me
Its urgent!!!!!!!