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Lob Address Verification
What it is
Lob Address Verification checks address data to help determine whether an address can be delivered. It can correct and standardize individual addresses or batches through its APIs, and Lob says it can also process addresses as customers enter them on a website. Results may add delivery and geographic details such as ZIP+4, carrier route, address type, latitude, and longitude, alongside a confidence score based on mail delivery data. Lob states that coverage spans more than 240 global territories and that the service is USPS CASS certified. Listed integrations include AV Elements, Shopify Address Cleanser, Airtable Address Cleanser, and Zapier. The interactive demo provides examples in cURL, TypeScript, Node, Ruby, Python, PHP, Java, Elixir, and C#. Lob says it encrypts data in transit and at rest and provides automatic redaction and retention policies. The Developer tier has no subscription fee; paid pricing is listed from $20/mo (annual). A 30-day Enterprise trial is available for high-volume senders, with print and postage billed separately at discounted Enterprise rates.
For and against
For
- Checks individual addresses and batches through APIs
- Can clean addresses as customers enter them
- Coverage stated for more than 240 global territories
- Results can include ZIP+4 and geographic details
- Developer tier has no subscription fee
Against
- International verifications incur additional charges on listed tiers
- Enterprise pricing is custom and not listed
- Print and postage are billed separately
The verdict
Lob Address Verification combines address correction, standardization, and deliverability checks with enrichment and integration options. Review the listed plan limits and usage charges to determine which tier fits your verification volume.
Who it suits
It suits teams that need to clean, verify, or enrich address data for websites or API workflows. Developers can use the listed code examples, while businesses can choose among several integration options.
Plans and prices
Developer
Up to 6,000 mailings · 1 user · $0.05/additional US address verifications · $0.07/additional international address verifications
Read 30 Sep 2026 · lob.com
Startup
Up to 75,000 mailings · 3 users · 1,000 US verifications included for $25/mo, then $0.025/additional · 500 international verifications included for $30/mo, then $0.06/additional
Read 30 Sep 2026 · lob.com
Growth
Up to 150,000 mailings · 5 users · 50,000 US verifications included for $450/mo, then $0.009/additional · 10,000 international verifications included for $550/mo, then $0.055/additional
Read 30 Sep 2026 · lob.com
Enterprise
150,000+ mailings/year · 20+ users · Address verification pricing on request · Advanced support
Read 30 Sep 2026 · lob.com
On the record
- Address enrichment
- The verification results can include delivery and geographic information such as ZIP+4, carrier route, address type, latitude, and longitude.lob.com · read 30 Sep 2026
- Bulk verification
- Lob says its APIs can validate individual or bulk addresses.lob.com · read 30 Sep 2026
- Compliance
- Lob says it aligns with SOC 2 and HIPAA and supports GDPR and CCPA/CPRA; it also states that it completes annual SOC 2 Type 2 audits.lob.com · read 30 Sep 2026
- Confidence score
- Lob describes a confidence score based on its mail delivery data to over half of US households.lob.com · read 30 Sep 2026
- Coverage
- The product page states that delivery data is available for more than 240 global territories.lob.com · read 30 Sep 2026
- Developer support
- The interactive demo lists code examples for cURL, TypeScript, Node, Ruby, Python, PHP, Java, Elixir, and C#.lob.com · read 30 Sep 2026
- Free option and trial
- The pricing page says the Developer tier has no subscription fee and offers a 30-day Enterprise free trial for high-volume senders, with print and postage billed separately at discounted Enterprise rates.lob.com · read 30 Sep 2026
- Integrations
- Lob lists AV Elements, Shopify Address Cleanser, Airtable Address Cleanser, and Zapier among its Address Verification integrations.help.lob.com · read 30 Sep 2026
- Purpose
- Address Verification corrects, standardizes, and cleans address data to help determine whether addresses are deliverable.lob.com · read 30 Sep 2026
- Real-time checks
- Lob says it can complete, autocorrect, and standardize addresses as customers enter them on a website.lob.com · read 30 Sep 2026
- Security
- Lob says it encrypts data in transit with TLS 1.2+ and at rest with AES-256, and provides automatic redaction and data retention policies.lob.com · read 30 Sep 2026
- Support
- The pricing page lists standard support for Developer, Startup, and Growth, while Enterprise includes account management and integration assistance.lob.com · read 30 Sep 2026
- US certification
- Lob says its address verification is USPS CASS certified.lob.com · read 30 Sep 2026
