Group By in ABAP ..

Hi,

My Itab contains n number of records and i am triggering mails wrto the mail id in itab.

and it's working fine .I want to group my Itab wrto Mailid, and want to trigger mail Only

once with the set of records.

Say,if my itab contains 15 records ..with 2 category of mailid's,

Then i want to send 2 mails one with 10 records and other with 5 records .

Tnks in Advance.

Regards,

SAPUser100