Best Lob.com Alternatives (2026)

11 Data Validation APIs you can use instead of Lob.com. Compared by auth type, HTTPS support, and CORS compatibility.

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US Address Verification

All Alternatives to Lob.com

11 APIs

Official French address validation service

Connection for brevo CRM suite

Verify charities via EIN using IRS, PUB78, BMF & OFAC data for compliance and legitimacy

Test api server to receive and return value from HTTP method

Content validator against profanity & obscenity

Enter address data quickly with real-time address suggestions

Extract postal addresses from any text including emails

Validate and append data for any US postal address

This API validates postal codes within UK

VAT Number Validation & Lookup REST API

VAT number validation

Featured APIs appear first in alternatives pages, category rankings, and the homepage. Launch partner rate: $29/mo.