aid: postgrid
name: PostGrid
description: >-
  PostGrid is a physical mail automation platform that provides REST APIs for
  sending printed letters, postcards, checks, and self-mailers at scale. It
  offers a Print & Mail API that enables developers to programmatically trigger
  and manage direct mail campaigns with full personalization and tracking
  support. PostGrid also provides US & Canada Address Verification and
  International Address Verification APIs covering 245+ countries for real-time
  autocomplete, standardization, geocoding, and bulk batch verification. The
  platform supports both test and live API environments, integrates natively with
  Salesforce, HubSpot, Zapier, and Marketo, and handles postage, printing, and
  delivery end-to-end.
type: Index
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
  - Direct Mail
  - Print & Mail
  - Address Verification
  - Address Validation
  - Postcards
  - Letters
  - Checks
  - Physical Mail
  - Mail Automation
  - Address Autocomplete
  - Geocoding
url: https://raw.githubusercontent.com/api-evangelist/postgrid/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.19'

apis:

  - aid: postgrid:print-mail-api
    name: PostGrid Print & Mail API
    description: >-
      A REST API for programmatically sending letters, postcards, checks, and
      self-mailers. Handles printing, postage, and delivery with support for
      templates, contacts, tracking, webhooks, and both test and live modes.
      Authenticated via x-api-key header.
    humanURL: https://docs.postgrid.com/
    baseURL: https://api.postgrid.com
    tags:
      - Direct Mail
      - Letters
      - Postcards
      - Checks
      - Self-Mailers
      - Print
      - Mail Automation
    properties:
      - type: Documentation
        url: https://docs.postgrid.com/
      - type: OpenAPI
        url: https://postgrid.readme.io/llms.txt
      - type: PythonSDK
        url: https://github.com/postgrid/postgrid-python
      - type: NodeSDK
        url: https://github.com/postgrid/postgrid-node
      - type: Examples
        url: https://github.com/postgrid/postgrid-examples

  - aid: postgrid:address-verification-api
    name: PostGrid US & Canada Address Verification API
    description: >-
      A REST API for real-time address autocomplete, verification, and
      standardization for US and Canadian addresses. Supports CASS-certified
      validation, geocoding (latitude/longitude), freeform address parsing, and
      batch verification for large-scale processing. Authenticated via x-api-key
      header with a default rate limit of 5 requests per second.
    humanURL: https://avdocs.postgrid.com/
    baseURL: https://api.postgrid.com/addver
    tags:
      - Address Verification
      - Address Validation
      - Address Autocomplete
      - CASS
      - Geocoding
      - US
      - Canada
    properties:
      - type: Documentation
        url: https://avdocs.postgrid.com/

  - aid: postgrid:international-address-verification-api
    name: PostGrid International Address Verification API
    description: >-
      A REST API for verifying, standardizing, and autocompleting addresses
      across 245+ countries worldwide. Supports real-time lookups and bulk
      verification workflows. Authenticated via x-api-key header.
    humanURL: https://intdocs.postgrid.com/
    baseURL: https://api.postgrid.com/addver
    tags:
      - Address Verification
      - Address Validation
      - International
      - Global
      - Address Autocomplete
    properties:
      - type: Documentation
        url: https://intdocs.postgrid.com/

common:
  - type: Website
    url: https://www.postgrid.com/
  - type: Documentation
    url: https://docs.postgrid.com/
  - type: Developers
    url: https://www.postgrid.com/developers/
  - type: GitHubOrganization
    url: https://github.com/postgrid
  - type: LinkedIn
    url: https://www.linkedin.com/company/postgrid
  - type: X
    url: https://x.com/postgridinc
  - type: Blog
    url: https://www.postgrid.com/blog/
  - type: Changelog
    url: https://www.postgrid.com/updates-and-releases/
  - type: Pricing
    url: https://www.postgrid.com/pricing/
  - type: StatusPage
    url: https://status.postgrid.com/
  - type: Support
    url: https://www.postgrid.com/help-support/
  - type: Plans
    url: plans/postgrid-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/postgrid-rate-limits.yml
  - type: FinOps
    url: finops/postgrid-finops.yml

maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com