Many time we send important email to someone and after few minutes the email server bounce back a message which is indicate that the current email is not valid and do not exist. If we already come to know that the receiver email id is valid or not then our work become easier to us and by knowing the correct email id, we can send our message ASAP.
For verification of an email id there is no validation test is available but there is a method exist which we can use to verify the existence of an email-id. The plus point of this method is you do not need to send the message on the receiver email id.
In this method, first you need to go to the forget password option of that email service provider like Gmail, Yahoo Mail, Hotmail etc. on which the receiver email id is exist. I am giving here the direct link of forgot password page for the large email service provider here:
Verify the existence of an email-id on Gmail server:
Verify the existence of an email-id on Yahoo Mail server:
Verify the existence of an email-id on Hotmail server:
You need to enter the email id which you want to check and then click on next option. If email id is not valid, then you will get message that this email address is not exist else you will be redirected to the password recovery page which means the email id is valid and exist.