Every developer who owns a signup form eventually runs into the same tension: the business wants more data, users want fewer fields, and engineering gets stuck holding the consequences.

Users submit only minimal information—an email with no name, a phone with no address—and downstream systems break. What developers need is more complete data without increasing friction.

The Accurate Append API solves this by taking one identifier and returning verified email, phone, and postal data instantly.

 

REQUEST (email must be URL encoded):

GET https://api.accurateappend.com/Services/V2/ReverseEmail/{API_KEY}/?emailaddress=example%40gmail.com

 

RESPONSE:

{

  “EmailAddress”: “example@gmail.com”,

  “FirstName”: “Sarah”,

  “LastName”: “Connelly”,

  “PhoneNumber”: “5551239876”,

  “LineType”: “Mobile”,

  “Address”: {

    “Street”: “1427 Fairview Ln”,

    “City”: “Richmond”,

    “State”: “VA”,

    “Zip”: “23220”

  },

  “MatchLevel”: “Exact”,

  “Source”: “ConsumerEmailDatabase”

}

 

Note: MatchLevel indicates the confidence of the identity match so you can suppress low-confidence results.

The API allows developers to auto-complete missing phone numbers, validate mobile vs landline, and pass complete profiles into downstream systems.

To test this in your environment, start your developer API trial.