DeBounce

DeBounce is an email validation and verification REST API that helps developers ensure the deliverability and quality of email addresses at scale. The API supports real-time single email validation, asynchronous bulk list processing, and data enrichment via reverse email lookup. It detects disposable addresses, role-based emails, catch-all domains, syntax errors, and performs MX record and SMTP-level mailbox verification. DeBounce offers pay-as-you-go credit-based pricing with no monthly subscription required, full API access at every tier, and credits that never expire.

DeBounce publishes 4 APIs on the APIs.io network, including Account API, Bulk API, Data API, and 1 more. Tagged areas include Email Validation, Email Verification, Deliverability, Disposable Email Detection, and MX Records.

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

DeBounce’s developer surface includes authentication, documentation, engineering blog, pricing, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

57.2/100 strong ▬ flat Agent 44/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serve⚡ Free to try

4 APIs

Email ValidationEmail VerificationDeliverabilityDisposable Email DetectionMX RecordsBulk Email ValidationData EnrichmentSyntax Validation

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 57.2/100 · strong

Contract Quality 19.5 / 25

Developer Ergonomics 5.2 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 6.8 / 13

Governance 8.3 / 12

Discoverability 7.4 / 10

Agent readiness — 44/100 · 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 7 / 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/debounce: 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 4

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

Rate Limits 1

Documented rate limits and quota policies.

Debounce Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

JSON Schema 1

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

DeBounce Validation Result

3 properties

JSON SCHEMA

Examples 1

Example request and response payloads for these APIs.

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary

Vocabulary

JSONLDContext

JSONLDContext

Build 2

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

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 4

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

BlogPosts

BlogPosts

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: debounce
name: DeBounce
description: 'DeBounce is an email validation and verification REST API that helps developers ensure the deliverability and
  quality of email addresses at scale. The API supports real-time single email validation, asynchronous bulk list processing,
  and data enrichment via reverse email lookup. It detects disposable addresses, role-based emails, catch-all domains, syntax
  errors, and performs MX record and SMTP-level mailbox verification. DeBounce offers pay-as-you-go credit-based pricing with
  no monthly subscription required, full API access at every tier, and credits that never expire.

  '
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/debounce.png
url: https://raw.githubusercontent.com/api-evangelist/debounce/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.19'
tags:
- Email Validation
- Email Verification
- Deliverability
- Disposable Email Detection
- MX Records
- Bulk Email Validation
- Data Enrichment
- Syntax Validation
apis:
- aid: debounce:debounce-account-api
  name: DeBounce Account API
  description: Account balance and usage history
  humanURL: https://debounce.com/solutions/api/
  baseURL: https://api.debounce.io/v1/
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/debounce-account-api-openapi.yml
  - type: Documentation
    url: https://developers.debounce.com/
  - type: RateLimits
    url: https://developers.debounce.com/api-concepts/rate-limiting
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/debounce/refs/heads/main/json-schema/debounce-validation-result-schema.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/debounce/refs/heads/main/examples/debounce-single-validation-example.json
- aid: debounce:debounce-bulk-api
  name: DeBounce Bulk API
  description: Bulk email list upload and status
  humanURL: https://debounce.com/solutions/api/
  baseURL: https://api.debounce.io/v1/
  tags:
  - Bulk
  properties:
  - type: OpenAPI
    url: openapi/debounce-bulk-api-openapi.yml
  - type: Documentation
    url: https://developers.debounce.com/
  - type: RateLimits
    url: https://developers.debounce.com/api-concepts/rate-limiting
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/debounce/refs/heads/main/json-schema/debounce-validation-result-schema.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/debounce/refs/heads/main/examples/debounce-single-validation-example.json
- aid: debounce:debounce-data-api
  name: DeBounce Data API
  description: Data enrichment and disposable email detection
  humanURL: https://debounce.com/solutions/api/
  baseURL: https://api.debounce.io/v1/
  tags:
  - Data
  properties:
  - type: OpenAPI
    url: openapi/debounce-data-api-openapi.yml
  - type: Documentation
    url: https://developers.debounce.com/
  - type: RateLimits
    url: https://developers.debounce.com/api-concepts/rate-limiting
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/debounce/refs/heads/main/json-schema/debounce-validation-result-schema.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/debounce/refs/heads/main/examples/debounce-single-validation-example.json
- aid: debounce:debounce-validation-api
  name: DeBounce Validation API
  description: Email address validation endpoints
  humanURL: https://debounce.com/solutions/api/
  baseURL: https://api.debounce.io/v1/
  tags:
  - Validation
  properties:
  - type: OpenAPI
    url: openapi/debounce-validation-api-openapi.yml
  - type: Documentation
    url: https://developers.debounce.com/
  - type: RateLimits
    url: https://developers.debounce.com/api-concepts/rate-limiting
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/debounce/refs/heads/main/json-schema/debounce-validation-result-schema.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/debounce/refs/heads/main/examples/debounce-single-validation-example.json
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/debounce/overview
- type: AgenticAccess
  url: agentic-access/debounce-agentic-access.yml
- type: DomainSecurity
  url: security/debounce-domain-security.yml
- type: Authentication
  url: authentication/debounce-authentication.yml
- type: Website
  url: https://debounce.com/
- type: Documentation
  url: https://developers.debounce.com/
- type: GitHubOrg
  url: https://github.com/debounceio
- type: LinkedIn
  url: https://www.linkedin.com/company/debounceio
- type: Blog
  url: https://debounce.com/blog/
- type: Pricing
  url: https://debounce.com/pricing/
- type: StatusPage
  url: https://status.debounce.com/
- type: X
  url: https://x.com/debounceio
- type: Plans
  url: plans/debounce-plans-pricing.yml
- type: RateLimits
  url: rate-limits/debounce-rate-limits.yml
- type: FinOps
  url: finops/debounce-finops.yml
- type: Vocabulary
  url: vocabulary/debounce-vocabulary.yml
- type: JSONLDContext
  url: json-ld/debounce-context.jsonld
- type: BlogPosts
  url: blogs/blogs.json
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com