mailboxlayer

aid: mailboxlayer
name: mailboxlayer
description: mailboxlayer is an apilayer-owned REST JSON API for email address verification. It performs syntax and typo checks,
  MX-record lookup, real-time SMTP verification, catch-all detection, role-address detection, free and disposable provider
  detection, and returns a numeric deliverability quality score. Useful for signup-form validation, list hygiene, lead enrichment,
  and fraud prevention.
url: https://mailboxlayer.com
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://mailboxlayer.com/site_images/mailboxlayer_logo_white.svg
specificationVersion: '0.20'
created: '2026-05-28'
modified: '2026-05-30'
x-source: public-apis/public-apis
x-category: Email
x-tier: 3
x-tier-reason: bulk-registered-from-public-apis
x-type: company
tags:
- Email
- Email Verification
- Email Validation
- SMTP
- MX Records
- Catch-All Detection
- Disposable Email
- Free Email Provider
- Role Address
- Quality Score
- apilayer
- Public APIs
apis:
- aid: mailboxlayer:mailboxlayer-verification-api
  name: mailboxlayer Verification API
  description: Email address validation and verification operations.
  humanURL: https://mailboxlayer.com
  baseURL: https://apilayer.net/api
  tags:
  - Verification
  properties:
  - type: OpenAPI
    url: openapi/mailboxlayer-verification-api-openapi.yml
  - type: Documentation
    url: https://docs.apilayer.com/mailboxlayer/docs/api-documentation
  - type: APIReference
    url: https://docs.apilayer.com/mailboxlayer/docs/api-documentation
  - type: GettingStarted
    url: https://mailboxlayer.com/quickstart
  - type: Authentication
    url: https://docs.apilayer.com/mailboxlayer/docs/api-documentation
  - type: JSONSchema
    url: json-schema/mailboxlayer-check-result-schema.json
  - type: JSONSchema
    url: json-schema/mailboxlayer-error-schema.json
  - type: JSONStructure
    url: json-structure/mailboxlayer-check-result-structure.json
  - type: JSONLD
    url: json-ld/mailboxlayer-context.jsonld
  - type: Examples
    url: examples/mailboxlayer-check-success-example.json
  - type: Examples
    url: examples/mailboxlayer-check-typo-example.json
  - type: Examples
    url: examples/mailboxlayer-check-disposable-example.json
  - type: Examples
    url: examples/mailboxlayer-check-error-example.json
  - type: Examples
    url: examples/mailboxlayer-check-result-example.json
  - type: Examples
    url: examples/mailboxlayer-check-result-free-example.json
  - type: RateLimits
    url: rate-limits/mailboxlayer-rate-limits.yml
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/mailboxlayer/overview
- type: AgenticAccess
  url: agentic-access/mailboxlayer-agentic-access.yml
- type: DomainSecurity
  url: security/mailboxlayer-domain-security.yml
- type: Authentication
  url: authentication/mailboxlayer-authentication.yml
- type: Website
  url: https://mailboxlayer.com
- type: Portal
  url: https://mailboxlayer.com/dashboard
- type: Signup
  url: https://mailboxlayer.com/product
- type: Pricing
  url: https://mailboxlayer.com/product
- type: GettingStarted
  url: https://mailboxlayer.com/quickstart
- type: TermsOfService
  url: https://mailboxlayer.com/terms
- type: PrivacyPolicy
  url: https://mailboxlayer.com/privacy
- type: Support
  url: https://mailboxlayer.com/support
- type: GitHubOrganization
  url: https://github.com/apilayer
- type: GitHubRepository
  url: https://github.com/apilayer/mailboxlayer-API
- type: SDKs
  name: Laravel mailboxlayer
  url: https://github.com/ash-jc-allen/laravel-mailboxlayer
- type: SDKs
  name: actfong/mailboxlayer (Ruby)
  url: https://github.com/actfong/mailboxlayer
- type: SDKs
  name: damienmarchandfr/mailboxlayer-node-client (Node/TypeScript)
  url: https://github.com/damienmarchandfr/mailboxlayer-node-client
- type: SDKs
  name: mailboxlayerbundle (Symfony)
  url: https://github.com/ylly/mailboxlayerbundle
- type: Integrations
  name: PostHog
  url: https://github.com/PostHog/mailboxlayer-plugin
- type: Integrations
  name: Fortinet FortiSOAR
  url: https://github.com/fortinet-fortisoar/connector-mailboxlayer
- type: SpectralRules
  url: rules/mailboxlayer-rules.yml
- type: Vocabulary
  url: vocabulary/mailboxlayer-vocabulary.yml
- type: PublicAPIsListing
  url: https://github.com/public-apis/public-apis
- type: Plans
  url: plans/mailboxlayer-plans-pricing.yml
- type: RateLimits
  url: rate-limits/mailboxlayer-rate-limits.yml
- type: FinOps
  url: finops/mailboxlayer-finops.yml
- type: Features
  data:
  - name: Syntax And Typo Check
    description: Thorough RFC 5322 syntax validation with did-you-mean suggestions for likely typos.
  - name: Real-Time SMTP Verification
    description: Each address is pinged via SMTP to confirm the mailbox actually accepts mail.
  - name: MX Record Lookup
    description: Verifies that the email domain has functioning MX records.
  - name: Catch-All Detection
    description: Determines whether the recipient domain accepts mail for any local part (paid plans only).
  - name: Role Address Detection
    description: Flags addresses associated with a function rather than a person (support@, admin@, etc.).
  - name: Free Provider Detection
    description: Identifies addresses on free webmail providers (Gmail, Yahoo, Outlook.com, etc.).
  - name: Disposable Provider Detection
    description: Identifies addresses on throwaway / disposable providers (mailinator.com, etc.).
  - name: Quality Score
    description: A 0.0 to 1.0 numeric score expressing overall deliverability and quality.
  - name: HTTPS Encryption
    description: 256-bit HTTPS transport on paid plans (Basic and above).
  - name: Bulk Endpoint
    description: Submit 25 addresses (Pro Plus) or 100 addresses (Enterprise Plus) in a single request.
  - name: JSONP Support
    description: JSONP wrapper via the `callback` query parameter.
- type: UseCases
  data:
  - name: Signup Form Validation
    description: Catch typos and disposable addresses at signup before they hit your user database.
  - name: List Hygiene
    description: Clean existing email marketing lists to lift deliverability and sender reputation.
  - name: Lead Enrichment
    description: Enrich CRM and lead-capture records with deliverability scores and role flags.
  - name: Fraud And Abuse Prevention
    description: Block disposable email providers commonly used for trial abuse and chargebacks.
  - name: Transactional Email Hygiene
    description: Reduce hard-bounces from order receipts, password resets, and notifications.
  - name: B2B Sales Qualification
    description: Separate role addresses and free-provider addresses from individual corporate inboxes.
- type: Integrations
  data:
  - name: PostHog
    description: Plugin scoring incoming PostHog user emails via the mailboxlayer API.
  - name: Fortinet FortiSOAR
    description: Connector for incorporating email verification into security orchestration playbooks.
  - name: Laravel
    description: Multiple community Laravel packages wrap mailboxlayer for PHP web applications.
  - name: Symfony
    description: Symfony bundle for mailboxlayer-backed email validation.
  - name: Node.js / TypeScript
    description: Node and TypeScript client libraries for serverside email verification.
  - name: Ruby
    description: Ruby client gem.
  - name: Delphi
    description: Delphi sample demonstrating the API for desktop application validation.
- type: Solutions
  data:
  - name: Free
    description: 100 requests/month, HTTP only, no support, no catch-all detection.
  - name: Basic
    description: $14.99/mo for 5,000 requests; HTTPS, catch-all detection, standard support.
  - name: Professional Plus
    description: $74.99/mo for 50,000 requests; adds bulk endpoint (25 emails).
  - name: Enterprise Plus
    description: $249.99/mo for 250,000 requests; adds bulk endpoint (100 emails) and richer SLAs.
  - name: Custom
    description: Contact sales for higher volumes and bespoke arrangements.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com