Sending email - by not using SMTP

Hello Guys,

Find can find many script to send mail using powershell scripting, but all are using SMTP to send mail.

In my environment, the SMTP server Port 25 is blocked, am not able to succesfully run the script. 

I get the error, Exception calling "Send" with "4" argument(s): "Failure sending mail."

I checked the Firewall, and Port 25 status using telnet mydomain.com 25

Seems the port is disabed and i dont have access to enable the same.

Is there any other way we can send mail other than SMTP, 

I came to know we can use other protocols like IMAP, POP etc to send mail. 

Please suggest.