SparkPost website screenshot

SparkPost

SparkPost (now part of Bird) is the world's leading email delivery platform, providing a REST API for sending transactional and marketing emails, managing templates, tracking analytics, handling suppressions, and processing inbound email. Trusted by enterprises such as The New York Times, Adobe, and Zillow, SparkPost delivers billions of emails daily with advanced analytics, A/B testing, and real-time event streams via webhooks.

SparkPost publishes 12 APIs on the APIs.io network, including DKIM Keys API, Events API, Inbound Domains API, and 9 more. Tagged areas include Email, Transactional Email, Marketing Email, Email Delivery, and SMTP.

The SparkPost catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

SparkPost’s developer surface includes authentication, documentation, getting-started guide, engineering blog, pricing, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub
55.0/100 developing ▬ flat Agent 38/100 agent ready Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
12 APIs
EmailTransactional EmailMarketing EmailEmail DeliverySMTPWebhooksAnalyticsTemplatesSuppression List

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 55.0/100 · developing
Contract Quality 17.7 / 25
Developer Ergonomics 7.4 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 5.5 / 13
Governance 7.0 / 12
Discoverability 7.4 / 10
Agent readiness — 38/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/sparkpost: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 12

Individual APIs this provider publishes, each with its own machine-readable definition.

SparkPost DKIM Keys API

The DKIM Keys API from SparkPost — 3 operation(s) for dkim keys.

SparkPost Events API

The Events API from SparkPost — 4 operation(s) for events.

SparkPost Inbound Domains API

The Inbound Domains API from SparkPost — 2 operation(s) for inbound domains.

SparkPost Metrics API

The Metrics API from SparkPost — 17 operation(s) for metrics.

SparkPost Recipient Lists API

The Recipient Lists API from SparkPost — 2 operation(s) for recipient lists.

SparkPost Relay Webhooks API

The Relay Webhooks API from SparkPost — 3 operation(s) for relay webhooks.

SparkPost Sending Domains API

The Sending Domains API from SparkPost — 3 operation(s) for sending domains.

SparkPost Subaccounts API

The Subaccounts API from SparkPost — 3 operation(s) for subaccounts.

SparkPost Suppression List API

The Suppression List API from SparkPost — 3 operation(s) for suppression list.

SparkPost Templates API

The Templates API from SparkPost — 4 operation(s) for templates.

SparkPost Transmissions API

The Transmissions API from SparkPost — 2 operation(s) for transmissions.

SparkPost Webhooks API

The Webhooks API from SparkPost — 6 operation(s) for webhooks.

Scroll for all 12

Pricing Plans 1

Published pricing tiers and plan structures.

Sparkpost Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sparkpost Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Sparkpost Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Sparkpost Context

16 classes · 40 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

SparkPost API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

SparkPost Suppression Entry

7 properties

JSON SCHEMA

SparkPost Transmission

8 properties

JSON SCHEMA

SparkPost Webhook

12 properties

JSON SCHEMA

Examples 3

Example request and response payloads for these APIs.

Sparkpost Create Webhook Example

3 fields

EXAMPLE

Sparkpost Send Email Example

3 fields

EXAMPLE

Sparkpost Suppression Bulk Example

3 fields

EXAMPLE

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Sparkpost Authentication

apiKey · 1 scheme

SECURITY

Sparkpost Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Sparkpost Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Sparkpost Agentic Access

79 operations · 34 acting

79 operations · 34 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 SupportDocumentation
SupportDocumentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 8

SDKs, sample code, and the tooling you integrate with

GitHubOrg
GitHubOrg
 SDKNodejs
SDKNodejs
 SDKPython
SDKPython
 SDKPHP
SDKPHP
 SDKJava
SDKJava
 SDKGo
SDKGo
 SDKElixir
SDKElixir
 PostmanCollection
PostmanCollection

Scroll for all 8

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

Website
Website
 LinkedIn
LinkedIn
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

X
X

Source (apis.yml)

apis.yml Raw ↑ 
aid: sparkpost
name: SparkPost
description: SparkPost (now part of Bird) is the world's leading email delivery platform, providing a REST API for sending
  transactional and marketing emails, managing templates, tracking analytics, handling suppressions, and processing inbound
  email. Trusted by enterprises such as The New York Times, Adobe, and Zillow, SparkPost delivers billions of emails daily
  with advanced analytics, A/B testing, and real-time event streams via webhooks.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sparkpost.png
url: https://raw.githubusercontent.com/api-evangelist/sparkpost/refs/heads/main/apis.yml
created: 2026-06-13
modified: 2026-06-13
specificationVersion: '0.19'
tags:
- Email
- Transactional Email
- Marketing Email
- Email Delivery
- SMTP
- Webhooks
- Analytics
- Templates
- Suppression List
apis:
- aid: sparkpost:sparkpost-dkim-keys-api
  name: SparkPost DKIM Keys API
  description: The DKIM Keys API from SparkPost — 3 operation(s) for dkim keys.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - DKIM Keys
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-dkim-keys-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-events-api
  name: SparkPost Events API
  description: The Events API from SparkPost — 4 operation(s) for events.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-events-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-inbound-domains-api
  name: SparkPost Inbound Domains API
  description: The Inbound Domains API from SparkPost — 2 operation(s) for inbound domains.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Inbound Domains
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-inbound-domains-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-metrics-api
  name: SparkPost Metrics API
  description: The Metrics API from SparkPost — 17 operation(s) for metrics.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Metrics
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-metrics-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-recipient-lists-api
  name: SparkPost Recipient Lists API
  description: The Recipient Lists API from SparkPost — 2 operation(s) for recipient lists.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Recipient Lists
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-recipient-lists-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-relay-webhooks-api
  name: SparkPost Relay Webhooks API
  description: The Relay Webhooks API from SparkPost — 3 operation(s) for relay webhooks.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Relay Webhooks
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-relay-webhooks-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-sending-domains-api
  name: SparkPost Sending Domains API
  description: The Sending Domains API from SparkPost — 3 operation(s) for sending domains.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Sending Domains
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-sending-domains-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-subaccounts-api
  name: SparkPost Subaccounts API
  description: The Subaccounts API from SparkPost — 3 operation(s) for subaccounts.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Subaccounts
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-subaccounts-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-suppression-list-api
  name: SparkPost Suppression List API
  description: The Suppression List API from SparkPost — 3 operation(s) for suppression list.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Suppression List
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-suppression-list-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-templates-api
  name: SparkPost Templates API
  description: The Templates API from SparkPost — 4 operation(s) for templates.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-templates-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-transmissions-api
  name: SparkPost Transmissions API
  description: The Transmissions API from SparkPost — 2 operation(s) for transmissions.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Transmissions
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-transmissions-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
- aid: sparkpost:sparkpost-webhooks-api
  name: SparkPost Webhooks API
  description: The Webhooks API from SparkPost — 6 operation(s) for webhooks.
  humanURL: https://developers.sparkpost.com/api/transmissions/
  baseURL: https://api.sparkpost.com/api/v1
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/sparkpost-webhooks-api-openapi.yml
  - type: Documentation
    url: https://developers.sparkpost.com/api/transmissions/
  - type: Documentation
    url: https://developers.sparkpost.com/api/templates/
  - type: Documentation
    url: https://developers.sparkpost.com/api/metrics/
  - type: Documentation
    url: https://developers.sparkpost.com/api/message-events/
  - type: Documentation
    url: https://developers.sparkpost.com/api/webhooks/
  - type: Documentation
    url: https://developers.sparkpost.com/api/suppression-list/
  - type: Documentation
    url: https://developers.sparkpost.com/api/recipient-lists/
  - type: Documentation
    url: https://developers.sparkpost.com/api/sending-domains/
  - type: Documentation
    url: https://developers.sparkpost.com/api/subaccounts/
  - type: Documentation
    url: https://developers.sparkpost.com/api/inbound-domains/
common:
- type: AgenticAccess
  url: agentic-access/sparkpost-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/sparkpost-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/sparkpost-domain-security.yml
- type: Authentication
  url: authentication/sparkpost-authentication.yml
- type: Website
  url: https://www.sparkpost.com/
- type: Documentation
  url: https://developers.sparkpost.com/api/
- type: GettingStarted
  url: https://support.sparkpost.com/docs/getting-started/getting-started-sparkpost
- type: SupportDocumentation
  url: https://support.sparkpost.com/docs
- type: GitHubOrg
  url: https://github.com/SparkPost
- type: LinkedIn
  url: https://www.linkedin.com/company/sparkpost
- type: X
  url: https://x.com/sparkpost
- type: Blog
  url: https://www.sparkpost.com/blog/
- type: Pricing
  url: https://www.sparkpost.com/pricing/
- type: StatusPage
  url: https://status.sparkpost.com/
- type: SDKNodejs
  url: https://github.com/SparkPost/node-sparkpost
- type: SDKPython
  url: https://github.com/SparkPost/python-sparkpost
- type: SDKPHP
  url: https://github.com/SparkPost/php-sparkpost
- type: SDKJava
  url: https://github.com/SparkPost/java-sparkpost
- type: SDKGo
  url: https://github.com/SparkPost/gosparkpost
- type: SDKElixir
  url: https://github.com/SparkPost/elixir-sparkpost
- type: PostmanCollection
  url: https://github.com/SparkPost/postman-collection
- type: Plans
  url: plans/sparkpost-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sparkpost-rate-limits.yml
- type: FinOps
  url: finops/sparkpost-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com