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 API contracts indexed 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 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

37.1/100 thin ▬ flat Agent 26/100 agent aware Front door AI 4/6 moderate Heartbeat 98/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

10 published contracts

Email Transactional Email Marketing Email Email Delivery SMTP Webhook Analytics Templates Suppression

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Developer Platform & API Ecosystem Management

BC-4270

Webhooks

GET /webhooks GET /webhooks/{id} GET /webhooks/{id}/batch-status GET /webhooks/events/samples

SaaS Tenant Management

BC-4230

Subaccounts

POST /subaccounts

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 37.1/100 · thin

Contract Quality 11.5 / 19

Developer Ergonomics 3.9 / 15

Access Clarity 1.0 / 15

Operational Transparency 3.2 / 10

Contract Governance 0.9 / 9

Discoverability 5.4 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 2.2 / 10

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 6.4 — up to +18.7 composite points Ask about this →
Developer Ergonomics scores 26.2 — up to +14.8 composite points Ask about this →
Contract Governance scores 9.8 — up to +10.8 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/sparkpost/apis.yml: open an issue on github.com/api-evangelist/sparkpost to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

SMTP

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

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

Open Collections 12

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

SparkPost Events DKIM Keys API

OPEN COLLECTION

SparkPost DKIM Keys Events API

OPEN COLLECTION

SparkPost Events DKIM Keys Inbound Domains API

OPEN COLLECTION

SparkPost Events DKIM Keys Metrics API

OPEN COLLECTION

SparkPost Events DKIM Keys Recipient Lists API

OPEN COLLECTION

SparkPost Events DKIM Keys Relay Webhooks API

OPEN COLLECTION

SparkPost Events DKIM Keys Sending Domains API

OPEN COLLECTION

SparkPost Events DKIM Keys Subaccounts API

OPEN COLLECTION

SparkPost Events DKIM Keys Suppression List API

OPEN COLLECTION

SparkPost Events DKIM Keys Templates API

OPEN COLLECTION

SparkPost Events DKIM Keys Transmissions API

OPEN COLLECTION

SparkPost Events DKIM Keys Webhooks API

OPEN COLLECTION

Scroll for all 12

SparkPost API pricing

Not yet checked against SparkPost's own pricing page. Compiled by API Evangelist; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Test (Free)	Free
Starter	$20
Premier	—

Plan details, limits and sources →

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. Counts are the severity each rule declares, not results of running them.

SparkPost — jsonschema rules

5 rules · 4 warn-severity 1 info-severity

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

SparkPost Events Api Certification Overlay

1 action · security · sparkpost-events-api-openapi.yml

DERIVED

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 (API Evangelist recommendations) 1

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

SparkPost Agentic Access

79 operations · 30 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

SDKNodejs

SDKPython

SDKPHP

SDKJava

SDKGo

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

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

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
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - url: https://www.sparkpost.com/
    status: 301
    note: declared website redirects to https://bird.com/products/email?sp=true — a different registrable domain (sparkpost.com
      -> bird.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-11-13'
  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: '0.23'
tags:
- Email
- Transactional Email
- Marketing Email
- Email Delivery
- SMTP
- Webhook
- Analytics
- Templates
- Suppression
tags_raw:
- 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:
  - Event
  tags_raw:
  - 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
  tags_raw:
  - 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:
  - Transmission
  tags_raw:
  - 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:
  - Webhook
  tags_raw:
  - 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: CapabilityMap
  url: capabilities/sparkpost-capability-edges.yml
  name: SparkPost Business Capability Map
- 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

SparkPost API — frequently asked questions

Does SparkPost have an API?

Yes. APIs.io lists 12 APIs from SparkPost, including SparkPost DKIM Keys API, SparkPost Events API and SparkPost Inbound Domains API, and 9 more.

Is there an OpenAPI specification for the SparkPost API?

Yes. APIs.io indexes 12 OpenAPI specifications for SparkPost, each linked for download from this page.

How do I authenticate with the SparkPost API?

SparkPost uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as SparkPost Authentication.

How much does the SparkPost API cost?

APIs.io lists 3 pricing plans for SparkPost, with each plan's price, limits and inclusions under Pricing on this page.

Is the SparkPost API ready for AI agents?

SparkPost has a Kin Score of 37.1 out of 100 (thin) and an Agent Readiness score of 26.1 (agent-aware), scored by API Evangelist on 2026-11-13.

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