BoomTrain website screenshot

BoomTrain

BoomTrain was a machine-learning marketing technology startup that used AI to power personalized, cross-channel messaging (email, web, and push notifications) for brands, predicting individual content and send-time recommendations for each consumer. Backed by 500 Global (formerly 500 Startups) among others, BoomTrain raised roughly $15M before being acquired by Zeta Global in July 2017 (reportedly $35-40M), which folded its machine-learning, decisioning, and personalization technology into the Zeta Marketing Platform. The boomtrain.com domain now redirects to Zeta Global; there is no standalone BoomTrain developer portal, public API, or documentation surface. This profile is retained as a historical company record in the API Evangelist network.

BoomTrain is profiled on the APIs.io network. Tagged areas include Company, Marketing, Personalization, Machine Learning, and Artificial Intelligence.

🌐 Visit website 📡 Source on GitHub
6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyMarketingPersonalizationMachine LearningArtificial IntelligenceEmailCustomer EngagementAcquired

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 6.8/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 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/boomtrain: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

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

Boomtrain Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: boomtrain
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/boomtrain.png
name: BoomTrain
description: BoomTrain was a machine-learning marketing technology startup that used AI to power personalized, cross-channel
  messaging (email, web, and push notifications) for brands, predicting individual content and send-time recommendations for
  each consumer. Backed by 500 Global (formerly 500 Startups) among others, BoomTrain raised roughly $15M before being acquired
  by Zeta Global in July 2017 (reportedly $35-40M), which folded its machine-learning, decisioning, and personalization technology
  into the Zeta Marketing Platform. The boomtrain.com domain now redirects to Zeta Global; there is no standalone BoomTrain
  developer portal, public API, or documentation surface. This profile is retained as a historical company record in the API
  Evangelist network.
url: https://raw.githubusercontent.com/api-evangelist/boomtrain/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
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Marketing
- Personalization
- Machine Learning
- Artificial Intelligence
- Email
- Customer Engagement
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/boomtrain-domain-security.yml
- type: Website
  url: https://boomtrain.com
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence