Cleariflow

Cleariflow checks the data that arrives at a service: email addresses, phone numbers, and IP addresses. The point is to keep fake signups, undeliverable mail, and automated traffic out of a customer database.

An email is checked for typos and for whether a message can actually be delivered. A phone number is checked against the international format and the carrier. An IP address shows the country and signs of bot traffic. When there are thousands of rows, you upload a file and get the results back in one pass. Developers call the same checks through an API.