Online tool for chacking email address is valid or not

As in the present era maximum communication over long distance formal or informal takes place through emails but unfortunately, not all email addresses are valid!!!! Also we can get a seemingly innocent mail but from invalid addresses. Before replying, we want to know if the address is actually valid or not.
Here are 3 online tools to check if an email address is valid.

1. Verify Email address

Just type in your address and this online tool checks first if the syntax was correct. Then it looks up the email provider. If the check is valid, it shows a green tick mark next to the email address. This service was simple and intuitive but does not show us the logs. 
Link: Verify Email Address

2. Verify Email

Verify Email is also useful to check if the email address you entered is valid or not. Type in the email address and click on ‘Verify’. If the result is OK, then it means the service was able to verify successfully. This does show a log  of how your email was verified.Link: Verify Email

3.Email Unlimited:verify email tool-

Finally, another online tool which will also check if the email you entered exists or not. This service prominently displays the logs while carrying out the verification

Link: Verify email tool