Stannp

aid: stannp
name: Stannp
description: 'Stannp is a direct mail platform that enables businesses to send physical postcards and letters programmatically
  via a REST API. The platform lets developers create campaigns, upload recipient lists, trigger individual mail pieces in
  real time, and track print and delivery status through webhooks and event endpoints. Authentication uses API key-based HTTP
  Basic Auth over HTTPS, and the API follows a simple JSON response envelope with success/data or success/error fields. Stannp
  serves businesses across the UK, US, and Canada with per-item pricing for letters and postcards at scale, and supports no-code
  integrations through Zapier and Make as well as official SDKs for PHP, Go, and C#.

  '
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Direct Mail
- Postcards
- Letters
- Print
- Physical Mail
- Marketing Automation
- Campaigns
url: https://raw.githubusercontent.com/api-evangelist/stannp/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.19'
apis:
- aid: stannp:direct-mail-api
  name: Stannp Direct Mail API
  description: 'REST API for programmatically sending physical letters and postcards, managing recipient groups, configuring
    campaigns, triggering individual mail pieces, and tracking delivery status through webhooks and event callbacks.

    '
  humanURL: https://www.stannp.com/us/direct-mail-api
  baseURL: https://api-eu1.stannp.com/v1/
  tags:
  - Direct Mail
  - Letters
  - Postcards
  - Campaigns
  - Recipients
  - Webhooks
  properties:
  - type: Documentation
    url: https://www.stannp.com/us/direct-mail-api/guide
  - type: OpenAPI
    url: https://www.stannp.com/us/direct-mail-api
  - type: OpenAPI
    url: openapi/stannp-direct-mail-api-openapi.yml
  - type: JSONSchema
    url: json-schema/recipient.json
  - type: JSONSchema
    url: json-schema/mailpiece.json
  - type: JSONSchema
    url: json-schema/campaign.json
  - type: Vocabulary
    url: vocabulary/stannp-vocabulary.yml
  - type: JSONLDContext
    url: json-ld/stannp-context.jsonld
common:
- type: TrustCenter
  url: security/stannp-trust-center.yml
- type: DomainSecurity
  url: security/stannp-domain-security.yml
- type: Authentication
  url: authentication/stannp-authentication.yml
- type: Website
  url: https://www.stannp.com
- type: Documentation
  url: https://www.stannp.com/us/direct-mail-api/guide
- type: GitHubOrganization
  url: https://github.com/Stannp
- type: LinkedIn
  url: https://www.linkedin.com/company/stannp-com-postcard-bulk-mailer
- type: X
  url: https://twitter.com/stannpdm
- type: Blog
  url: https://go.stannp.com/blogs
- type: Pricing
  url: https://www.stannp.com/us/pricing-tiers
- type: Plans
  url: plans/stannp-plans-pricing.yml
- type: RateLimits
  url: rate-limits/stannp-rate-limits.yml
- type: FinOps
  url: finops/stannp-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com