The standard procedure of sending the report via E-mail works via MAPI (Messaging Application Programming Interface). Unfortunately, the syntax of this interface is not fully standardized, and each e-mail application uses a different method of adding attachments. To change this behavior use the following event:
or you can subscribe to the following event:
in which sending the argument arg as the StiSendEMailEventArgs type with the following fields:
you can set the CallStandardHandler property to false in this event and realize your method of sending mail.