When I use Cl_bcs to send a email,is it possible to quit the receipt?

Dear all,

This email is sent by our sap system automatically with receipt request

Maybe some rules added on our mail server to handle the receipt, 

and some email addresses are not able to send the receipt request, sometimes even error raised

so, i am wondering when i use cl_bcs to send a email, is it possible to quit the receipt request function ?

thx~