Inbox

aid: inbox
name: Inbox
description: Inbox is an API Evangelist index of email and inbox-oriented API platforms that developers use to send, receive,
  parse, route, schedule, and verify email messages. The index focuses on transactional and conversational email providers
  exposing programmatic access to message lifecycle, deliverability, and inbox automation primitives.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/inbox.png
tags:
- Email
- Inbox
- Messaging
- Deliverability
- Transactional Email
url: https://raw.githubusercontent.com/api-evangelist/inbox/refs/heads/main/apis.yml
created: '2024-12-25'
modified: '2026-08-13'
specificationVersion: '0.23'
apis:
- aid: inbox:mailgun-email-api
  name: Mailgun Email API
  description: Mailgun provides a programmable email API for sending, receiving, tracking, and validating email at scale.
    Endpoints cover messages, domains, suppressions, mailing lists, webhooks, inbound routes, event streams, and inbox placement
    testing for deliverability monitoring.
  humanURL: https://www.mailgun.com/
  baseURL: https://api.mailgun.net/v3
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  tags:
  - Email
  - Transactional Email
  - Deliverability
  - Inbound Parsing
  properties:
  - type: Documentation
    url: https://documentation.mailgun.com/docs/mailgun/api-reference/intro/
  - type: APIReference
    url: https://documentation.mailgun.com/docs/mailgun/api-reference/openapi-final/tag/Introduction/
  - type: Pricing
    url: https://www.mailgun.com/pricing/
  - type: SignUp
    url: https://signup.mailgun.com/new/signup
- aid: inbox:nylas-email-api
  name: Nylas Email API
  description: Nylas exposes a unified REST API for email, calendar, contacts, and scheduling across Google, Microsoft, iCloud,
    and IMAP providers. Developers can read, send, and thread messages, manage folders and labels, handle attachments, and
    subscribe to webhook notifications without integrating each provider individually.
  humanURL: https://www.nylas.com/products/email-api/
  baseURL: https://api.us.nylas.com/v3
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  tags:
  - Email
  - Unified-API
  - IMAP
  - Webhook
  tags_raw:
  - Email
  - Unified API
  - IMAP
  - Webhooks
  properties:
  - type: Documentation
    url: https://developer.nylas.com/docs/v3/email/
  - type: APIReference
    url: https://developer.nylas.com/docs/api/v3/ecc/
  - type: Pricing
    url: https://www.nylas.com/pricing/
  - type: SignUp
    url: https://dashboard-v3.nylas.com/register
common:
- type: TrustCenter
  url: security/inbox-trust-center.yml
- type: DomainSecurity
  url: security/inbox-domain-security.yml
- type: LLMsTxt
  url: llms/inbox-llms.txt
- type: Website
  url: https://apievangelist.com/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-attribution:
  index_of_third_party_apis: true
  duplicates_profiles:
  - mailgun
  - nylas
  review: duplicate-index-candidate
x-enrichment:
  date: '2026-08-13'
  status: minimal
  artifacts_added: 2
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Inbox is an API Evangelist editorial index of email API platforms, not a company — it owns no domain and ships no
    API, and the two APIs it lists (Mailgun, Nylas) are published by third parties whose own profiles already hold their specs,
    so nothing discoverable here belongs to this entry.
  evidence:
  - url: https://developer.nylas.com/.well-known/api-catalog
    status: 200
  - url: https://documentation.mailgun.com/llms.txt
    status: 200
  - url: https://api.mailgun.net/openapi.json
    status: 404
  - url: https://api.us.nylas.com/.well-known/agent-card.json
    status: 404
  checked: '2026-08-13'