If the email address is not valid, you won't be able to reach your customers / clients ...
If the email address is not valid, you risk to be blacklisted by your email provider (and believe me, that's not cool at all !)
We have created a great email verification tool that connects to the email server and check if the mailbox exists.
Our tool is delivered as a simple (but secure) API with the full documentation.
You are allowed to make 1 call / second maximum per access key.
You can have access to an unlimited call or you buy the number of call you want to make !