• It's a SMTP JS server for a contact form to receive the details of the sent users of the contact form.
• SmtpJS [https://smtpjs.com/] - Email sending using JavaScript
• Elastic Mail [https://elasticemail.com/] - To integrate email into websites using the Email API.
• Can encrpty the username and password from the "view page source" by using the security in SmtpJs - It gives us a unique key by which we can use it on JavaScript "SecureToken"