Build in comprehensive postal address, name, email, and phone cleansing quickly and easily to e-Commerce or retail sites to prevent fraud, lost shipments and returned mail. Return comprehensive location, property, and business information to power BI and analytics. Unleash your creativity by combining the output of several APIs with your own data, to generate custom mashups, maps, shapes, and firmographics that empower new products.

Single Record & Batch Processing

Melissa Web APIs support single record lookups, ideal for web forms and call center applications, as well as batch processing for database cleanup.

Affordable Development & Scalable Pricing

Purchase and spend Melissa Credits to get started immediately, and progress to Melissa tiered transactions as your business scales by calling a helpful Melissa representative.

Flexible Web APIs

Modern interfaces available; REST, JSON, and XML for easy integration into your applications.

Location Based Services

Global Address Web API

Verifies and standardizes U.S. and international addresses in over 200 countries and 46 territories with Postal Authority certified coding and premise level Geocoding.

As low as $0.045 per Record!

Learn More

Global IP Web API

Return a geolocation of an input IP address with latitude and longitude, proxy info, city, region and country.

As low as $0.006 per Record!

Learn More

Property Web API (US/CAN)

Return comprehensive property and mortgage info for over 140 million U.S. properties based on supplied Assessor Parcel Number or input address.

As low as $0.024 per Record!

Learn More

Business & Identification Services

Personator Web API (USA/CAN)

USPS CASS/DPV certified address checking, name parsing and genderizing, phone and email verification are easily performed with API.

As low as $0.018 per Record!

Learn More

Global Email Web API

Verify email mailboxes, syntax, and domains in real-time to confirm they are deliverable. Takes an input email address and returns a status of deliverability to the box level, as well as returns domain information.

As low as $0.006 per Record!

Learn More

Global Business Web API

Return detailed firmographic data on 25+ million U.S. companies including contact title, address, phone and email by supplying an input Business name, Stock Ticker or Business Address

As low as $0.045 per Record!

Learn More

Global Name Web API

Verify, standardize and parse person and business names while identifying suspicious or vulgar names by sending in a full name.

As low as $0.003 per Record!

Learn More

Global Phone Web API

Verify phone as active, output Caller ID info, as well identifies line type, and returns geographic details, dominant language and carrier for over 200 countries.

As low as $0.012 per Record!

Learn More

Resources for Developers


Open Source Software

Download Listware Desktop, our scalable, open source data cleansing platform. It’s free to use and modify.

Free Download

On-Premise APIs

Melissa’s full suite of on-premise APIs for data verification and enrichment are a great choice if you have extra-sensitive information, need greater speed or have strict compliance requirements.

Check Out On-Premise APIs

MVP Program

Join Melissa’s community of data quality enthusiasts and IT professionals. Share thought leadership, receive product discounts and earn referral fees.

Learn More

© 2019 Melissa. All Rights are Reserved.