[Koha] Unable to send emails for Late orders

[Vimal Laxman]

Dear All ,
                  i am using my send mail  with my Gmail configured  for
sending mails from koha.the mail sending is working fine for check in
checkouts .But for the late order claims its showing mail sent but neither
i  get an error message in Mail.log or i am able to see the mail in my sent
mail.i am aslo unable to see any log for sent mail.kindly help me solve
these issues .

thanks and regards,
vimal