When you want to describe what the Simple Mail Transfer Protocol (SMTP) is in simple words, the answer can be the following: it’s the basic set of rules that helps deliver emails from one place to another. These rules make sure your email travels safely from the server of origin to the designated one. With UniOne’s SMTP API, you can always be sure that your emails are delivered where they were supposed to, since beside the sending itself, we also give you the information on the emails’ statuses: deliveries, opens, clicks, etc.
