Sending mail to same mail Id with different data.

[#1]

Hi,

I am trying to send mails to 'n' customers .

Email                   Dept             %

aaa@gmail.com    aa                100

bbb@gmail.com    bb                200

aaa@gmail.com    cc                300

sending mail is working fine for first two email id's, 3rd row data is skipping as it contains same mail id as first one.

Please advise how to send mail to unique mail id's with different data.

Thanks in advance.