Gmass is a tool that allows you to test your SMTP server for proper configuration and performance. It is designed to work with any SMTP server and can be used to test both inbound and outbound mail flow.
There are a number of ways to test SMTP servers to see if they are functioning correctly. One popular method is to use a service like GMass. This service will send a test email to the SMTP server and then report back on whether or not the email was delivered successfully.
The GMass SMTP test services are a great way to test your email server's performance. They provide a comprehensive set of tools to help you troubleshoot your email server's issues. Overall, the GMass SMTP test services are a valuable resource for any email server administrator.