Appgain website screenshot

Appgain

Appgain is an omnichannel messaging and mobile marketing automation platform, originally out of the MENA region, that lets marketers acquire, engage, and retain mobile and web users across push notifications, in-app messaging, email, SMS, WhatsApp, and web push from a single cloud. Its REST API and mobile SDKs power smart deep links, micro landing pages, behavior-triggered automation journeys, a customer data platform (CDP) with real-time event logging and purchase tracking, and multi-channel campaign delivery, with marketplace apps for Shopify, Zid, and Salla and no-code integrations via Zapier and n8n. The backend is built on the open-source Parse Server stack, and first-party SDKs cover Android, iOS, Flutter, React Native, Cordova/Ionic, and web.

Appgain publishes 1 API on the APIs.io network: OmniChannel Messaging API. Tagged areas include Company, Mobile Marketing, Marketing Automation, Omnichannel Messaging, and Push Notifications.

Appgain’s developer surface includes documentation, API reference, getting-started guide, changelog, engineering blog, pricing, signup flow, and 14 more developer resources.

33.5/100 thin ▬ flat Agent 10/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.5
AccessSelf serve
1 APIs
CompanyMobile MarketingMarketing AutomationOmnichannel MessagingPush NotificationsSMSEmailWhatsAppCustomer Data PlatformDeep LinkingCustomer Engagement

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.5
Composite quality — 33.5/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 12.6 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 10/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
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/appgain: 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 1

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

Appgain OmniChannel Messaging API

REST API for sending multi-channel campaigns (rich push notifications, email, SMS, web push), creating smart deep links, managing a media library, and logging user events/purcha...

Security Posture 2

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

Appgain Authentication

apiKey · 1 scheme

SECURITY

Appgain Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Build 4

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 3

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: appgain
name: Appgain
description: Appgain is an omnichannel messaging and mobile marketing automation platform, originally out of the MENA region,
  that lets marketers acquire, engage, and retain mobile and web users across push notifications, in-app messaging, email,
  SMS, WhatsApp, and web push from a single cloud. Its REST API and mobile SDKs power smart deep links, micro landing pages,
  behavior-triggered automation journeys, a customer data platform (CDP) with real-time event logging and purchase tracking,
  and multi-channel campaign delivery, with marketplace apps for Shopify, Zid, and Salla and no-code integrations via Zapier
  and n8n. The backend is built on the open-source Parse Server stack, and first-party SDKs cover Android, iOS, Flutter, React
  Native, Cordova/Ionic, and web.
url: https://raw.githubusercontent.com/api-evangelist/appgain/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Mobile Marketing
- Marketing Automation
- Omnichannel Messaging
- Push Notifications
- SMS
- Email
- WhatsApp
- Customer Data Platform
- Deep Linking
- Customer Engagement
image: https://appgain.io/og-image-blog.jpg
apis:
- name: Appgain OmniChannel Messaging API
  description: REST API for sending multi-channel campaigns (rich push notifications, email, SMS, web push), creating smart
    deep links, managing a media library, and logging user events/purchases into the Appgain CDP. Authentication is via an
    application API key (appApiKey header) scoped to a project ID.
  humanURL: https://apidocs.appgain.io
  baseURL: https://api.appgain.io
  tags:
  - Messaging
  - Push Notifications
  - Deep Linking
  - Event Logging
  properties:
  - type: APIReference
    url: https://apidocs.appgain.io
  - type: Postman
    url: https://documenter.getpostman.com/view/4679101/T17KeScV?version=latest
  - type: Authentication
    url: authentication/appgain-authentication.yml
  - type: Conventions
    url: conventions/appgain-conventions.yml
  - type: DataModel
    url: data-model/appgain-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://appgain.io
- type: DeveloperPortal
  url: https://docs.appgain.io
- type: Documentation
  url: https://docs.appgain.io/complete-knowledge-base/
- type: APIReference
  url: https://apidocs.appgain.io
- type: GettingStarted
  url: https://docs.appgain.io/SDK/gettingStarted/
- type: Postman
  url: https://documenter.getpostman.com/view/4679101/T17KeScV?version=latest
- type: ChangeLog
  url: https://headwayapp.co/appgain-changelog
- type: Blog
  url: https://www.appgain.io/blog
- type: Pricing
  url: https://www.appgain.io/pricing
- type: SignUp
  url: https://dashboard.appgain.io
- type: TermsOfService
  url: https://www.appgain.io/terms
- type: PrivacyPolicy
  url: https://www.appgain.io/privacy
- type: Support
  url: https://p.appgain.io/slack
- type: GitHubOrganization
  url: https://github.com/appgain
- type: Packages
  url: packages/appgain-packages.yml
- type: SDKs
  url: packages/appgain-packages.yml
- type: Authentication
  url: authentication/appgain-authentication.yml
- type: Conventions
  url: conventions/appgain-conventions.yml
- type: ChangeLog
  url: changelog/appgain-changelog.yml
  name: Appgain Changelog (structured)
- type: DataModel
  url: data-model/appgain-data-model.yml
- type: DomainSecurity
  url: security/appgain-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence