SMTP is the method used to send an email, hence SMTP services. This is a specialised service to send large quantities of emails or routine emails, but to make sure the emails are delivered, and able to monitor the delivery with feedback on what has gone wrong with the delivery if this info is required. there is a large amount of info that is available to monitor email delivery, but the main reason to use this service is to make sure your emails are delivered and on time, it is sent via email specialists who understand the details of this industry and pass this information on to us to benefit. We have also found that system generated emails, like invoices, new service notifications, support tickets are often blocked by email networks, and sending these via such a service has huge benefits. There are also additional advantages, such as feedback on bounces, if mail is opened, or links are clicked. We can assign an admin area to a controller of your SMTP Relay Service to manage and use to measure using the statistics offered.