Sender email Address: The email address from which the email should be sent.
Recipient email Address: The email address of the recipient. If you are sending the email to yourself then this will be the same as the Sender email Address.
SMTP Server: The HostName/IP Address of the email SMTP server. For example: smtp.gmail.com for gmail.
Port: The port used by the SMTP server. Normally 25/465/587. For example: 465 for gmail.
Security: The ...