PostGrid Address Verification Alternatives (January 2026)

PostGrid Address Verification

Address Validation API | Address Verification API Services - USPS API - PostGrid™

https://www.postgri.com/address-verification-api/

Verify/Validate Addresses using PostGrid’s CASS (USPS) and SERP (Canada Post) certified Address validation and verification API and services.

4.9/5

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1.
Address Lookup, Rooftop Geo, Bank, Mobile & Email Validation - Postcoder
https://postcode
.com/

Postcoder is the API for address lookup & form validation. Improve your conversion rates and capture better quality customer data.

2.
Address Validator: Postal Address Validation & Address Verification Service
https://www.byteplan
.com/address-validator/

With our free postal address verification and international address validation service you can easily verify if any USPS or international postal address is valid and deliverable.

3.
USPS & International Address Verification - Smarty
https://smart
.com/

Address Verification for USPS & International Addresses. Try our easy-to-use APIs, list processing tools and more.

4.
USPS & International Address Verification - Smarty
http://smart
.com/

Address Verification for USPS & International Addresses. Try our easy-to-use APIs, list processing tools and more.

5.
Address Verification - Postal Address Validation | Melissa
https://www.meliss
.com/address-verification/

Melissa’s address verification systems standardize your US, Canada and International postal addresses – CASS and SERP Certified.

6.
Address Verification, Data Validation & Geocoding Software | Loqate, a GBG solution
https://www.loqat
.com/

Improve data quality by capturing correct UK addresses. Boost conversions and user experience with postcode address verification and geocoding technology.

7.
Email Validation API - Verify Email Address | MailboxValidator
https://www.mailboxvalidato
.com/

MailboxValidator email validation clean email lists and reduces bounce. It connects to the mail server and checks whether the mailbox exists or not.

8.
Email Address Verification Service | Kickbox
https://kickbo
.com/

Verify your email list in minutes, or integrate real-time email verification into your app with our API. Over 18 billion emails verified. Get started for free.

9.
mailboxlayer API | Free, Powerful Email Validation API
https://mailboxlaye
.com/

Simple and powerful email verification JSON API using SMTP, typo checks, syntax validation, and free and disposable provider filtering. Free for personal use.