Database Mail

I have a stored procedure that validates data for a reporting process. If invalid data is found, I have a call to db_send_dbmail that includes a query for the invalid data. I can highlight the call to the dbmail procedure and run it and the mail will send. If I run the parent procedure that calls dbmail, the mail will not send. Any thoughts? The call to the dmmail procedure is nested in a Begin/End.

More information: I don't receive any error. The mail gets queued and the log only has Process is started and Process is shutting down entries.