Validate Email with by checking mail delivery

We have many third party  mail checking services . I have mentioned an service which I see was working good .

Sigin URL (get 25 email free per day) - https://verifalia.com/

API Documentation - https://verifalia.com/developers#email-validations

Curl for submitting for checking email validation and check Id received from first curl to second API

curl -u username:password
    --compressed
    -H "Content-Type: application/json"
    -d "{ entries: [ { inputData: 'batman@gmail.com' } ] }"
    https://api.verifalia.com/v2.2/email-validations

curl -u username:password
    --compressed
    https://api.verifalia.com/v2.2/email-validations/54375b5b-a399-4bc4-abd8-b8c02e109e53