The following diagram depicts the flow of a Spring mail message process. With this, we can clearly understand the process of sending mail using a Spring mailing template.

A message is created and sent to the transport protocol, which interacts with internet protocols. Then, the message is received by the recipients.

The Spring mail framework requires a mail configuration, or SMTP configuration, as the input and message that needs to be sent. The mail API interacts with internet protocols to send messages. In the next section, we shall look at the classes and interfaces in the Spring mail framework.