Сhecking the email server performance. Send basic commands to see if the server matches the correct one. Send basic commands to see if the server responds correct. A simple SMTP mail server test.
SMTP checker helps to verify the mail server for errors or malfunctions. Use SMTP checker to see if the server is currently running or if there is no overflow. This utility is easy to use and very useful to find out a lot of information about the SMTP server.