Supafax

Supafax is an AI email assistant and autonomous inbox agent from Veriad, Inc. (Y Combinator Winter 2026) that lives inside Gmail and Outlook to proactively manage email and calendar. It drafts context-aware replies in your writing style, auto-labels and prioritizes messages, schedules and books meetings through back-and-forth coordination, answers inbox queries, and runs custom automation rules defined in plain English. Founded in 2025 in San Francisco by Rohan Mahendraker and Anton Muratov, Supafax sells a Professional plan and an Enterprise tier with SSO/SCIM, custom integrations, and dedicated support. It is a consumer/B2B productivity product with no public developer API at this time; its security posture (security.txt, CASA Tier 2, ICO registration, GDPR) is its most developer-relevant public surface.

Supafax is profiled on the APIs.io network. Tagged areas include Company, Email, Calendar, AI Assistant, and AI Agent.

Supafax’s developer surface includes pricing, signup flow, support, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
21.1/100 emerging ▬ flat Agent 7/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyEmailCalendarAI AssistantAI AgentEmail AutomationProductivityY Combinator

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 21.1/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 0.9 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 1.4 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 7/100 · 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 4 / 4
Consent & Bot Identity 3 / 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/supafax: 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 3

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

Supafax Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Supafax Vulnerability Disclosure

security.txt · contact published

SECURITY

Supafax Trust Center

SOC 2, ISO 27001, HIPAA, GDPR

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp
SignUp
 Login
Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown
WellKnown

Access & Security 6

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Security
Security
 Compliance
Compliance
 SecurityTxt
SecurityTxt

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: supafax
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/supafax.png
name: Supafax
description: Supafax is an AI email assistant and autonomous inbox agent from Veriad, Inc. (Y Combinator Winter 2026) that
  lives inside Gmail and Outlook to proactively manage email and calendar. It drafts context-aware replies in your writing
  style, auto-labels and prioritizes messages, schedules and books meetings through back-and-forth coordination, answers inbox
  queries, and runs custom automation rules defined in plain English. Founded in 2025 in San Francisco by Rohan Mahendraker
  and Anton Muratov, Supafax sells a Professional plan and an Enterprise tier with SSO/SCIM, custom integrations, and dedicated
  support. It is a consumer/B2B productivity product with no public developer API at this time; its security posture (security.txt,
  CASA Tier 2, ICO registration, GDPR) is its most developer-relevant public surface.
url: https://raw.githubusercontent.com/api-evangelist/supafax/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Email
- Calendar
- AI Assistant
- AI Agent
- Email Automation
- Productivity
- Y Combinator
apis: []
common:
- type: TrustCenter
  url: security/supafax-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/supafax-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/supafax-domain-security.yml
- type: Security
  url: https://supafax.com/security
- type: Compliance
  url: https://supafax.com/security
- type: Website
  url: https://supafax.com
- type: Pricing
  url: https://supafax.com/pricing
- type: SignUp
  url: https://app.supafax.com/signup
- type: Login
  url: https://app.supafax.com/login
- type: TermsOfService
  url: https://supafax.com/terms
- type: PrivacyPolicy
  url: https://supafax.com/privacy
- type: Support
  url: mailto:rohan@supafax.com
- type: WellKnown
  url: well-known/supafax-well-known.yml
- type: SecurityTxt
  url: well-known/supafax-security.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 5
  pass: local-v1