Top 10 Best Address Verification Software of 2026

Smarty, from smartystreets.com, is a leading address verification platform offering API-based services for validating, standardizing, and geocoding addresses across the US, Canada, and 250+ international countries. It leverages official USPS CASS-certified data for unparalleled US accuracy, supporting single lookups, batch processing, and real-time autocomplete to prevent data entry errors. Ideal for e-commerce, logistics, and CRM integrations, it ensures high deliverability rates and compliance with postal standards.

Loqate is a premier address verification platform offering real-time address capture, validation, and autocomplete services covering over 250 countries and territories. It integrates seamlessly via APIs, SDKs, and widgets to minimize data entry errors, boost delivery accuracy, and ensure compliance with global postal standards. Businesses in e-commerce, logistics, and finance leverage Loqate to enhance customer onboarding and reduce returns from invalid addresses.

Melissa (melissadata.com) is a comprehensive address verification software that standardizes, validates, and geocodes mailing addresses using official postal data sources worldwide. It offers CASS-certified accuracy for US addresses and supports over 240 countries with append capabilities like geocodes and move data. Flexible deployment includes APIs, cloud services, desktop tools, and on-premise options for seamless integration into business workflows.

Experian Data Quality is an enterprise-grade data management platform specializing in address verification, standardization, and enrichment using proprietary global datasets. It validates addresses in over 240 countries with high accuracy, supporting real-time API calls, batch processing, and integrations with CRM, ERP, and marketing tools. The solution ensures compliance with postal standards like USPS CASS and helps reduce undeliverable mail while improving data quality for customer onboarding, fraud prevention, and direct marketing.

Precisely Address Verification, part of the Spectrum platform, is a leading data quality solution that validates, standardizes, and geocodes addresses worldwide using official postal authority data. It supports real-time API processing, high-volume batch jobs, and multi-language address handling across 250+ countries and territories. Ideal for enterprises managing customer data, shipping, and compliance, it delivers CASS-certified accuracy for US addresses and equivalent standards globally.

PostGrid is a robust address verification API that standardizes, validates, and autocorrects addresses in real-time across 250+ countries with high accuracy, including USPS CASS and DPV certifications. It supports single lookups, batch processing, and autocomplete for forms, integrating seamlessly with CRMs like Salesforce, HubSpot, and no-code tools like Zapier. Beyond verification, it offers automated print-and-mail services for direct mail campaigns using verified addresses.

Lob is an API-driven platform specializing in address verification, standardization, and validation for US and international addresses, ensuring USPS compliance through CASS certification, DPV, and other services. It autocorrects addresses, appends missing data, and integrates seamlessly with Lob's print-and-mail APIs for end-to-end direct mail automation. Primarily targeted at developers, it supports high-volume processing with reliable accuracy for e-commerce, marketing, and logistics applications.

EasyPost is a comprehensive shipping API platform that includes robust address verification tools to standardize, validate, and geocode addresses using USPS CASS-certified data and international sources. It ensures accurate delivery by correcting common address errors in real-time, supporting both domestic and global addresses. Primarily designed for e-commerce and logistics, its AV features integrate seamlessly into shipping workflows to reduce undeliverable packages.

ShipEngine is a comprehensive shipping platform with robust address verification capabilities, leveraging USPS CASS-certified services to standardize, validate, and geocode addresses for accurate delivery. It supports US, Canada, and over 200 international countries, integrating seamlessly with e-commerce platforms and shipping carriers. Ideal for businesses handling high-volume shipping, it reduces errors and returns through real-time address corrections during checkout or fulfillment.

Group1 Software offers address verification tools like Address Checker, a Windows-based solution for standardizing and validating US and Canadian addresses to USPS CASS standards. It excels in batch processing for mailing lists, data hygiene, and ensuring high deliverability rates for direct mail campaigns. Primarily on-premise software, it provides reliable accuracy for domestic postal needs without requiring cloud connectivity.