Email Checker Basic: check and verify whether the email address is valid (format or syntax) and really existing on the corresponding email server without sending in SINGLE mode. Usually, it is used to maintain a clean emailing list.
It's very easy to use: just input/paste the email address and press <Enter>, the result will show soon. The result contains status (OK/BAD), Description and Interaction between Email Checker Basic and email server.
Key Features: Easy to use. Check validity and existence both. Verify really existing on email server without sending. Tell you the interaction between Email Checker Basic and the destination email Server. Tell you the description (reason) about the result. Filtered a few unsupported email servers to avoid the wrong result.
If you have many email addresses to manage or you need to verify the email address of someone, you may need it at sometime.