Auto FTP Manager sends emails messages immediately upon completion of the automated transfer. Usually emails sent within the same domain are delivered the quickest, for example from your gmail account to another gmail account. When you send from gmail to an address on a Microsoft Exchange server there will be transmission delays depending on how busy the gmail and exchange server networks are. To speed up the email reception, try using the SMTP address on your Microsoft Exchange directly. This should deliver to your email account faster. Alternatively, you can send the notifications to another address on Gmail.