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Benefits of Using PostGrid’s Address Verification Software
Verify, standardize, and validate your data in real-time to eliminate undeliverable mail.
CASS-certified verification cleans every list before it goes out, cutting undeliverable mail at the source.
Eliminate manual address checking, reduce reshipping costs, and stop wasting budget on mail that never arrives.
Verify a single address or a million. PostGrid is empowered to handle scale without any change to your workflow.
Reach the right person at the right address with every send. Improve campaign ROI and reduce spend.
Real-time validation detects missing fields, removes duplicates, and keeps your records clean and current.
Correctly formatted addresses move through postal systems faster, cutting delivery times by one to two days.
Why Choose PostGrid Address Verification Software
Everything businesses need to verify, autocomplete, geocode, and standardize addresses from a single unified platform.
01
Address Validation
Verify and correct addresses in real-time across the U.S. and 245+ countries and territories against official postal authority records.
02
Address Autocomplete
Suggest verified, deliverable addresses as users type, blocking bad data before it ever enters your system.
03
CASS & SERP Certified
Every customer address is checked and validated against official USPS and Canada Post records to improve deliverability.
04
Native Integrations
Connect geocoding data with 1,600+ apps via Zapier, including HubSpot, Shopify, Salesforce, and more, with no custom coding required.
05
Bulk Batch Verification
Verify up to 1M addresses in just two hours and receive a clean, verified deliverable address list.
06
Sub-Premise Accuracy
Verify down to apartment, suite, and unit level for precise last-mile delivery, not just street-level matching.
07
Timezone and Census Data
Return the U.S. Census tract, congressional district, carrier route, timezone, and residential or vacant status for every verified address.
08
NCOA Integration
Cross-reference every address against the USPS National Change of Address database to flag outdated records before any send.
09
Delivery Point Validation
Confirm in real-time that every address is physically serviceable by the post office before it enters your database.
10
Address Parsing
Automatically parse and clean freeform, unstructured address inputs into standardized components.
11
Forward & Reverse Geocoding
Convert any mailing address into exact latitude and longitude coordinates, or input geocodes to get the exact mailing addresses.
12
Dashboard Analytics
Track lookup volume, success rates, and error breakdowns in real-time from the PostGrid developer console.
Three Ways to Use PostGrid Address Verification Software
For Developers
Deploy REST APIs and SDKs in under 30 minutes. Get sub-second responses to verify addresses instantly within your own apps, web forms, and workflows.
For Ops & Data Teams
Use our no-code dashboard to clean up to 1 million addresses per batch. Perfect for routine database hygiene via CSV upload without needing a developer.
For Enterprise
Scale with confidence using CASS/SERP certified data. Fully compliant with HIPAA, SOC 2 TYPE 2, and GDPR. Includes SLA-backed uptime and dedicated support.
Enterprise-Grade Compliance and Data Security
PostGrid's address verification infrastructure is trusted by Fortune 500 companies for meeting the most stringent compliance and data security standards across all endpoints.
HIPAA
PIPEDA
GDPR
SOC 2 TYPE 2
PCI-DSS
Data Encryption
Audit Logs
Role-Based Access Control
Secure Hosting on AWS
Single Sign-On
Third-Party Penetration Testing
Continuous Monitoring
Verify, Validate, Autocomplete, and Standardize in Minutes
No complex setup. Receive clean, verified, mail-ready addresses in five steps.
Upload Your List
- Import your address list as a CSV file directly into the PostGrid dashboard or via the API.
- Validate and standardize addresses in bulk.
Authenticate
- Generate a live API key from the Developers section of your dashboard in seconds.
- Whitelist your domain for secure access.
- One key gives you full access to verification, autocomplete, geocoding, and bulk processing.
Verify and Autocorrect
- PostGrid runs every address against USPS and Canada Post records. Incomplete addresses are autocompleted.
- Typos are corrected. Every record is standardized to meet the destination country's postal format requirements.
Validate Deliverability
- Every address is cross-referenced against USPS NCOA data and run through Delivery Point Validation to confirm physical serviceability by the post office.
- Undeliverable, outdated, and duplicate addresses are flagged automatically.
Download Your Clean List
- Receive a fully verified, standardized, and mail-ready file.
- Every entry carries ZIP+4 appended, deliverability confirmed, and duplicate records removed.
- Ready to use immediately across any platform or campaign.
Built for Diverse Industries and Use Cases
See how businesses use PostGrid's address verification software to reduce costs, eliminate bad data, and improve delivery outcomes at scale.
Clean and verify mailing lists before every send to eliminate returns, reduce wasted spend, and reach the right audience every time.
Autocomplete addresses at the point of entry, reduce cart abandonment, and ensure only deliverable addresses enter your order system.
Guarantee that invoices, financial statements, and notices reach accurate, current addresses every billing cycle.
Verify patient and client addresses in bulk so appointment reminders always go to the right location.
Ensure time-sensitive collection letters and past-due notices reach verified, deliverable addresses without delay.
Verify patient and provider addresses in bulk within a fully HIPAA-compliant infrastructure.
Use postal-authority-verified address data to power Know Your Customer and anti-fraud protocols.
Verify new customer addresses the moment they enter your system, so every first impression is delivered.
Send tax forms and sensitive documents to verified, standardized addresses with full SOC 2 TYPE 2 compliance.
Keep customer address records current so renewal offers and reminders always reach their intended recipient.
Verify donor address lists so every appeal letter and fundraising campaign reaches the right person.
Eliminate duplicates, append missing fields, and standardize formatting across your entire CRM on ingestion.
Case Studies
Learn how industry leaders use PostGrid to reduce costs, cut manual workflows, ensure compliance, and drive ROI.
Read the Case Study
Ecobee
Ecobee, a leading smart home technology company, faced a growing problem with raw, unverified address data across its customer database, including duplicate entries, incorrectly formatted records, and addresses that were generating return shipments.
They integrated PostGrid's Address Verification API to automatically validate, correct, and deduplicate addresses across their system.
- Significant reduction in return shipments
- Eliminated redundant address entries at scale
Read the Case Study
Leon’s
Leon's, one of Canada's largest furniture retailers, needed to standardize supplier and customer addresses across cross-border operations to reduce order reconciliation errors and streamline their logistics workflows.
PostGrid's CASS and SERP certified API standardized their address data to meet both the U.S. and Canadian postal requirements.
- Reduced order reconciliation errors
- Standardized cross-border address data
- Improved operational accuracy across supplier records
Read the Case Study
TalentReef
TalentReef, a leading talent management platform, needed to clean and deduplicate candidate address data across a large and rapidly growing recruitment database.
PostGrid's address validation ensured data integrity across its entire pipeline.
- Cleaner candidate data across the recruitment pipeline
- Reduced duplicate records
- Higher data integrity at scale
Integrates with Your Favorite Tech Stack & Tools
Easily Improve your workflow and automate print & mail through seamless integration capabilities.
Frequently Asked Questions
Is PostGrid's Address Verification Software HIPAA-Compliant?
Yes. PostGrid and its partners are fully HIPAA-compliant. Businesses from regulated industries use the platform with signed Business Associate Agreements (BAAs).
Can Developers Test Before Going Live?
Yes. PostGrid offers a fully interactive sandbox environment with free test API keys. Test all integrations and bulk verification workflows without any charges before switching to live mode.
What Is Address Verification Software?
Address verification software validates, corrects, and standardizes mailing addresses against official postal records in real-time. Integrations connect verification workflows directly with CRMs, ERPs, and marketing automation platforms.
Do You Support International Address Verification?
Yes. PostGrid supports verification and autocomplete across 245+ countries and territories with consistent international formatting, and geocodes returned on every request.
What Is the Maximum File Size for Bulk Verification?
Files under 100MB work best. Up to 100,000 rows are recommended, with flexibility to 150,000 rows. Processing completes in under 15 minutes.
How Does NCOA Integration Work?
PostGrid cross-references your address list against the USPS National Change of Address database before any send or geocoding step, ensuring every record reflects a current, deliverable location rather than an outdated one.
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