Free tool
SMTP server check
Enter a mail server and port. We open a connection from our test network and show the greeting, STARTTLS support, the certificate and what the server advertises. We never log in and never send a message.
Free tool
Enter a mail server and port. We open a connection from our test network and show the greeting, STARTTLS support, the certificate and what the server advertises. We never log in and never send a message.