to check the quality of outgoing mail from the server, please use the mail tester site. enter the address https://www.mail-tester.com.

After signing in, you will receive a temporary email address, you must send then use this email address as your destination address.

click on the test button,  and you will receive the results of the email.

The best result is 10/10.

if there are points that can be improved upon, the tool will show them to us

please note that this system performs a general review. it typically generates a few notes on all domains.