SMTP stands for Simple Mail Transfer Protocol. Most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another. Email SMTP settings are used when creating device alerts, to allow the user to receive alert emails. | SMTP stands for Simple Mail Transfer Protocol. Most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another. Email SMTP settings are used when creating device alerts, to allow the user to receive alert emails. |