PostGrid Address Verification

Best for: Regulated or enterprise workloads - compliance attestations and an enterprise plan; Teams needing broad API coverage out of the box; Cost-sensitive teams - low, transparent entry price

Avoid if: You want to try it free before paying

• ████░░░░░░
  40 / 100
  Agent friendliness
• ████████▒░
  85 / 100
  Pricing transparency
• ███████░░░
  70 / 100
  Setup speed
• ████▒░░░░░
  45 / 100
  Docs quality
• ████████▒░
  85 / 100
  Procurement ease
• ████████▒░
  85 / 100
  Trust readiness

Scores are computed deterministically from this profile's published, sourced fields (pricing, compliance, capabilities, docs and developer-surface signals) - not from reviews or paid placement. Each axis is 0-100; an unknown signal scores 0 for that axis. Procurement ease is the inverse of buying friction (higher = easier to adopt).

Pricing model

Hybrid (base + usage) [2]postgrid.com/pricing-address-verification/“Essential: $18/month with 2,000 lookups per month and $0.02 per additional lookup; Business: $40/month with 10,000 lookups per month and $0.01 per additional lookup; Growth: $200/month with 50,000 lookups per month and $0.005 per additional lookup”

Published pricing

✓ Yes [3]postgrid.com/pricing-address-verification/“Essential: $18 /month with 2,000 lookups per month and $0.02 per additional lookup”

Free tier

✗ No [4]postgrid.com/address-verification/single-address-verification-api-demo/“PostGrid offers 500 free credits upon signup across all pricing tiers. This appears to be a one-time signup benefit rather than a recurring monthly allowance.”postgrid.com/pricing-address-verification/“All plans include 500 Free Credits for testing purposes”

Free tier details

500 one-time signup credits (Standard) or 50 one-time credits (International) for testing; 100 free bulk lookups on first upload. These are one-time trial credits, not a recurring monthly free allowance.

Self-serve signup

✓ Yes

Requires sales call

✗ No

Enterprise plan

✓ Yes [5]postgrid.com/pricing-address-verification/“Enterprise: Custom pricing available via sales contact”

• USPS CASS certified
• International coverage
• Address autocomplete
• Geocode append
• Bulk / batch

Supported actions

verify_address, verify_freeform_address, autocomplete, standardize, parse, bulk_verify, suggest_addresses, suggest_addresses_freeform, geocode_append, reverse_geocode, dpv_check, ncoa_processing, postal_code_lookup, city_state_lookup [6]postgrid.com/address-verification-api/“Autocomplete an Address, Verify a Structured Address, Verify a Freeform Address, Batch Verify Addresses, Suggest Addresses, Suggest Addresses Freeform, Parse an Address, Lookup City/State from Postal or ZIP Code, Lookup ZIP Codes From US City/State”

Regions

US (USPS CASS certified), Canada (Canada Post SERP certified), UK (Royal Mail PAF certified), Australia (Australia Post AMAS certified), 245+ countries and territories (International API product) [7]postgrid.com/address-verification-api/“CASS and SERP Certified Solution”postgrid.com/address-verification/“CASS Certified (USPS - US addresses), SERP Certified (Canada Post), PAF Certified (Royal Mail - UK), AMAS Certified (Australia Post)”

Languages

Latin, Cyrillic, Greek, Arabic, Hebrew, Hangul (Korean), Han Characters (Simplified Chinese), Han Characters (Traditional Chinese), Katakana (Japanese), Hiragana (Japanese), Devanagari, Thai, Tamil, Georgian, Bengali, Armenian

Input types

free-form address string, structured address components, CSV file (bulk), partial address (autocomplete)

Output types

standardized address, deliverability/validity codes, DPV flags, geocode (latitude/longitude), ZIP+4 append, residential delivery indicator (RDI), census data, accuracy score, JSON

Webhooks

✗ No [8]postgrid.com/address-verification-api/“No webhook details are mentioned in the provided content.”

Sandbox / test mode

✓ Yes [9]postgrid.com/guides/address-verification/“you may create a test key which does not consume any lookups but only returns dummy data”postgrid.com/address-verification/“We isolate the test and live environments so you can easily test your API calls”

SDK languages

Node.js/TypeScript, Python [10]postgrid.com/address-verification-api/“cURL, NodeJS, Python, PHP, Ruby”

MCP server

✗ No

SOC 2

SOC 2 Type II [11]postgrid.com/security/“PostGrid has a SOC 2 Type II report for Print & Mail and Address Verification products”

HIPAA

✓ Yes [12]postgrid.com/security/“PostGrid has completed the HIPAA framework and audited by Compliancy Group”

GDPR

✓ Yes [13]postgrid.com/security/“HIPAA, PCI-DSS, SOC-2 Type-2, PIPEDA, GDPR Compliant”

ISO 27001

– Unknown [14]postgrid.com/security/“ISO 27001: Not mentioned on this page”

PCI DSS

✓ Yes [15]postgrid.com/security/“PostGrid has PCI DSS 3.2.1 certification”

Published SLA

✓ Yes [16]postgrid.com/legal/service-level-agreement/“PostGrid will make the Address Verification API, International Address Verification API, and Print & Mail API available with a Monthly Uptime Percentage of at least 99.9%.”

Rate limits

5 requests/second (per API docs); 120 requests/minute (per marketing page); up to 100 addresses/second on batch endpoint [17]postgrid.com/address-verification-api/“120 Requests/Minute”postgrid.readme.io/docs/getting-started-1“All API endpoints (except preview endpoints) documented here have a default rate limit of 5 requests per second, with a max default throughput of 100 addresses per second.”

Known restrictions

Standard product covers US & Canada only; international coverage (245+ countries) requires separate International API product at higher pricing, Bulk verification: up to 200K addresses per upload via dashboard; up to 1M addresses per batch via API, NDA required to review SOC 2 Type II report and PCI DSS compliance documentation, Test keys return dummy data only - addresses are not actually verified in test mode, PCI DSS certificate available upon request [18]postgrid.com/guides/address-verification/“you may create a test key which does not consume any lookups but only returns dummy data”postgrid.com/address-verification/“Standard product: US & Canada; International product: 245+ countries and territories”

• Docs
• API reference
• Changelog
• Status page

Docs rendering: static

API style

rest

Base URL

https://api.postgrid.com/v1/addver

Version

v1

Versioning

url

Stability

ga

Auth methods

api_key

Idempotency keys

✓ Yes

Error format

vendor-specific

Rate limit

5 / second

SDKs

• Node.js/TypeScript postgrid-node · repo
• Python postgrid-python · repo

• Auth docs
• Quickstart

Launched

2021-01-01

Notable customers

Mutual of Omaha, Cognizant, Oura, Leon's

• Lob Address Verification

  "Avoid mail missteps and make failed deliveries a thing of the past."

  Hybrid · free tier · public pricing · self-serve

• Loqate Address Verification

  "Global address verification that ensures you reach your customers, every time."

  Usage · public pricing · self-serve

• Melissa

  Global data quality and enhancement solutions to profile, verify, clean, update, match, and integrate People data.

  Hybrid · free tier · public pricing · self-serve

• Smarty (US & International Address Verification)

  "Address data on easy mode"

  Subscription · public pricing · self-serve

• Service Objects DOTS Address Validation

  "Maximize Address Accuracy and Deliverability"

  Sales-led · self-serve

• Precisely Verify (Address Verification)

  "Deliver accurate, consistent, contextual data to your business - wherever and whenever it's needed."

  Sales-led · self-serve

PostGrid Address Verification alternatives · PostGrid Address Verification vs Lob Address Verification · All Address Validation APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: postgrid.com
2. ↑Pricing model: postgrid.com
3. ↑Published pricing: postgrid.com
4. ↑Free tier: postgrid.com · postgrid.com
5. ↑Enterprise plan: postgrid.com
6. ↑Supported actions: postgrid.com
7. ↑Regions: postgrid.com · postgrid.com
8. ↑Webhooks: postgrid.com
9. ↑Sandbox: postgrid.com · postgrid.com
10. ↑SDK languages: postgrid.com
11. ↑SOC 2: postgrid.com
12. ↑HIPAA: postgrid.com
13. ↑GDPR: postgrid.com
14. ↑ISO 27001: postgrid.com
15. ↑PCI DSS: postgrid.com
16. ↑Published SLA: postgrid.com
17. ↑Rate limits: postgrid.com · postgrid.readme.io
18. ↑Known restrictions: postgrid.com · postgrid.com

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-15 Score Docs Quality: 25 → 45
2. 2026-06-15 Score Agent Friendliness: 20 → 40
3. 2026-06-14 Robots Allows Agents: (none) → Yes
4. 2026-06-14 API Reference URL: (none) → https://www.postgrid.com/api/
5. 2026-06-14 Has Structured Data: (none) → Yes
6. 2026-06-14 Capabilities: {} → {"bulk":true,"autocomplete":true,"international":true,"cass_certified":true,"ge…
7. 2026-06-14 Summary Md: (none) → PostGrid Address Verification is a REST API that autocompletes, validates, stan…
8. 2026-06-14 Avoid If: (none) → You want to try it free before paying
9. 2026-06-14 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
10. 2026-06-14 Score Procurement Friction: (none) → 85
11. 2026-06-14 Score Agent Friendliness: (none) → 20
12. 2026-06-14 Score Pricing Transparency: (none) → 85
13. 2026-06-14 Score Setup Speed: (none) → 70
14. 2026-06-14 Score Docs Quality: (none) → 25
15. 2026-06-14 Score Trust Readiness: (none) → 85
16. 2026-06-14 Best For: (none) → Regulated or enterprise workloads - compliance attestations and an enterprise p…
17. 2026-06-14 Llms Txt Present: (none) → No
18. 2026-06-14 Docs URL: (none) → https://www.postgrid.com/docs
19. 2026-06-14 Changelog URL: (none) → https://www.postgrid.com/changelog
20. 2026-06-14 Status Page URL: (none) → https://status.postgrid.com
21. 2026-06-14 Rendering: (none) → static
22. 2026-06-14 Requires Sales Call: set to No
23. 2026-06-14 Enterprise Plan Available: set to Yes
24. 2026-06-14 SOC 2: set to type_2
25. 2026-06-14 HIPAA: set to Yes
26. 2026-06-14 GDPR: set to Yes
27. 2026-06-14 PCI DSS: set to Yes
28. 2026-06-14 SLA Published: set to Yes
29. 2026-06-14 SLA URL: set to https://www.postgrid.com/legal/service-level-agreement/
30. 2026-06-14 Data Retention Policy URL: set to https://www.postgrid.com/legal/data-processing-addendum-dpa/
31. 2026-06-14 Documented Rate Limits: set to 5 requests/second (per API docs); 120 requests/minute (per marketing page); up …
32. 2026-06-14 Rate Limit Requests: set to 5
33. 2026-06-14 Rate Limit Window: set to second
34. 2026-06-14 Known Restrictions: set to Standard product covers US & Canada only; international coverage (245+ countrie…
35. 2026-06-14 Auth Methods: set to api_key
36. 2026-06-14 Auth Docs URL: set to https://postgrid.readme.io/docs/overview
37. 2026-06-14 API Style: set to rest
38. 2026-06-14 Base URL: set to https://api.postgrid.com/v1/addver
39. 2026-06-14 API Version: set to v1
40. 2026-06-14 Versioning Scheme: set to url
41. 2026-06-14 Stability: set to ga
42. 2026-06-14 Quickstart URL: set to https://postgrid.readme.io/docs/getting-started-1
43. 2026-06-14 Idempotency Supported: set to Yes
44. 2026-06-14 Error Format: set to vendor-specific
45. 2026-06-14 Requires Verification: set to No
46. 2026-06-14 Starting Price Usd: set to 18
47. 2026-06-14 Price Basis: set to month
48. 2026-06-14 Sandbox Available: set to Yes
49. 2026-06-14 Launched At: set to 2021-01-01
50. 2026-06-14 Notable Customers: set to Mutual of Omaha, Cognizant, Oura, Leon's

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