The SendMailUseChannel() function allows messages to be sent from a mapping using a SMTP send channel.
In the subject and message body, Masks can be used.
SendMailUseChannel('SmtpChannel', 'user@mein.kunde.de', 'EDI file to your document number ${DocumentNumber}',
'Dear Sir or Madam,
attached is the EDI file related to your document no. ${DocumentNumber}, received on ${MessageEntryDate:yyyy-MM-dd}
the message with the subject "${Subject}".
Our ID: ${fn:XVar("DocId")}
Yours sincerely,
EDI User
', $SavedEdiFile)