EasyPost vs Google Address Validation: API comparison

The short answer

EasyPost keeps verification alongside shipping Address objects; Google returns validation verdicts inside Maps Platform. Choose based on whether the next step is an existing shipping workflow or a separate confirm/correct checkout flow, then compare coverage and account entitlement.

Choose by the task you need to complete
Provider	A good reason to choose it	Important caveat
EasyPost	A shipping workflow already using EasyPost that needs verification results before proceeding to shipment and label operations.	Creating an Address object is not a passed verification. Including verify or verify_strict triggers verification even with false; omit the parameter to skip it. International AVS requires separate enablement.
Google Address Validation	A checkout that needs component-level verdicts and a confirm-or-correct flow inside an existing Google Maps Platform integration.	Country coverage and billing SKU matter. US/PR CASS processing must be explicitly enabled; a response or coordinate alone does not establish delivery or identify an occupant.

Side-by-side differences

EasyPost vs Google Address Validation: documented interfaces, not benchmark scores
Requirement	EasyPost	Google Address Validation
Validation approach	Verification associated with shipping Address objects	Address component validation plus formatting and geocode
Coverage boundary	Domestic checks; international AVS is separately enabled	Supported-country list; optional CASS only for US/PR
Decision signal	verifications success/errors, not Address creation alone	Verdict granularity and component confirmation signals
Apartment/unit handling	Preserve street2 and inspect correction/splitting behavior	Inspect subpremise and missing/unconfirmed component signals
Workflow	Create-and-verify or verify an existing Address object	One address per validation request; confirm changes in the UI
Cost driver	Account/service entitlement and verification workload	Validation request SKU, tier and Cloud project quota

Pricing: make the units comparable

Billing model and plan checks
Provider	Billing model	What to check
EasyPost	Shipping-account and address-service pricing	Confirm standalone address verification, international AVS and carrier-grade access on your account. Free label allowances or tracking prices are not standalone validation prices.
Google Address Validation	Pay-as-you-go validation SKUs	Google documents per-request Pro and Enterprise SKUs and requires billing on the Cloud project. Check the actual SKU, included allowance and current region-specific pricing rather than reusing a Geocoding API price.

For 10,000 address checks, include retries and customer edits, not just completed orders. Count input addresses rather than batch HTTP calls. Compare the same country mix and postal evidence; a geocoding credit and a delivery-verification check do not buy the same result.

For a buying decision, calculate total spend divided by accepted outputs at your expected volume. Keep free evaluation access, paid production access, annual commitments and overages separate. We have not measured a cost or speed winner for this pair.

What changes in the integration?

Provider endpoints and input mapping
	EasyPost	Google Address Validation
Method and URL	`POST https://api.easypost.com/v2/addresses`	`POST https://addressvalidation.googleapis.com/v1:validateAddress`
Authentication	HTTP Basic auth with the API key as username and an empty password	API key or supported OAuth token; restrict credentials to the intended API
Inputs	JSON address with street1/street2, city, state, zip and country; include verify or verify_strict deliberately	JSON address with addressLines and recommended regionCode; optional enableUspsCass for US/PR
Output	Address object plus verifications with success, errors and details; strict verification fails when verification fails.	Validation result with verdict, address components, geocode and postal data where available; response identifier for follow-up.

EasyPost: migration check

Omit verify fields entirely when verification is not wanted; false is not an off switch. Distinguish strict API errors from non-strict verification errors before deciding whether a parcel may proceed.

Google Address Validation: migration check

Map component confirmation and verdict fields rather than inventing one universal valid flag. Do not substitute the Geocoding API or silently enable CASS on arbitrary generated addresses.

How to test them fairly

Use provider-approved test fixtures or addresses you have permission to process. Include international formats, accents, rural addresses and unit numbers. Do not generate arbitrary postal addresses or send private customer records without authorization.
Define expected outcomes for known-good records and approved negative cases before the run. Keep unsupported countries and missing evidence separate from invalid addresses.
Measure component correction, unit preservation and false rejection separately. A geocoder's building-level match is not confirmation of postal deliverability or of the person living there.
Record whether the API suggests a correction, confirms a delivery point or merely finds a location. Require customer confirmation when a suggested change could route a parcel elsewhere.
Count billed address checks, repeated checkout attempts, optional geocoding and batch records. Compare latency and cost per accepted decision on the same country mix. No validation result guarantees a successful future delivery.

Record the plan, request settings, time window and acceptance rules with every run. That makes a later result interpretable when a vendor changes a model, source set or pricing tier.

Prefer a common request format?

All Them APIs · Address Validation APIsPOST /api/v1/address-validation/validate

Review the request contract and tell us the coverage you need. Access requires enablement; this endpoint does not execute or bill requests yet.

View endpoint and request access

Sources and review dates

Documentation reviewed October 28, 2026. These are integration and plan comparisons, not measured speed or accuracy rankings. Availability, licensing and prices should be confirmed for the chosen plan.

Corrections: email faizank@docsalot.dev with an official source.