Emailing or faxing a statement or an invoice individually doesn't seem to have any problem, it's when they are sent in a batch format. Normally right after the end of each month when we are ready to send the statements with the related invoices together, the staff will start the printing process in sections so that the printer is not tied up for too long. The program will base on the settings of the send method of invoicing and statements and send them either to the printer or the fax or email queues and process accordingly. But from time to time, certain customers who are set up to receive the copies by fax or email told us that they did not receive certain ones during certain months. It's the inconsistency of this that makes it tough to fix and we do want to fix it so we can tell our customers that they will receive their copies on time without problems. Any more suggestions?