How to trigger mail on successful posting of manual payment through F-53??

Hi All,

I have a requirement to trigger mail with details of the document number, username created to distribution list on successful posting of manual payment run in F-53.

Please guide me on this,

1) Whether to go with BTE ?

   If yes, Please suggest me with the BTE to be used (Doesnt have idea about BTE).

2) Or to go with Enhancement?

If yes , Please suggest me with enhancement to be used.