It’s good validation to verify email domain ownership. Checking domains for email sending and receiving capabilities is a verification must.
When you verify a email domain, it could be done in one of two ways. One way checks that you are using a valid email address to send and receive from, the other way checks that someone else on your email list has a valid email address to send and receive at.
Several tests from internet tools will list MX records for a domain in priority order. You can often view the diagnostics and troubleshoot if a domain is configured to process email messages. This is done by connecting to the mail server or verifying reverse DNS records.
A test like this will perform a health check against the domain you enter and sometimes will send hundreds of performance tests verify all of tested systems are online and performing as expected.
Sometimes you have to go a little further than these simple checks and test if the deliverability of a email address is possible in seconds without sending a message to it.
Case in point is an account on a disposable email address service. Temporary accounts may exist only for 10 minutes or less and you will need check if the email address has a real domain name attached to it.
When these kinds of emails come up in your list, Email-Checker can go deeper and verify email domain existence in seconds. You can see an example of this in action here.
What you have read covers how to verify that a email address other than your own exists. If you need to verify to another service that you have ownership or control of a domain for sending and receiving purposes, we will cover that before closing out this article.
Other times you are required to verify an email address or domain to prove that you own it. If this happens to you, follow the validation guidelines posted on required services like Amazon SES or MailChimp to verify email domain ownership.