Buildforever website screenshot

Buildforever

BuildForever is a consumer software company building products that feel personal, magical, and deeply human. Its first product, Extra (extra.email), is a free AI email app for iPhone, Mac, and Gmail that automatically organizes the inbox into smart categories, summarizes what matters in a daily digest, cleans up subscriptions and unwanted senders, answers natural-language questions about your mail, and drafts replies in your own tone. Founded and led by CEO Naveen Gavini (formerly SVP/CPO at Pinterest), BuildForever is backed by Abstract Ventures, Felicis, and DST Global, with angel investors including Ben Silbermann, Guillermo Rauch, and Paul Buchheit. The company does not currently publish a public developer API; this profile captures its consumer product surface and identity.

Buildforever is profiled on the APIs.io network. Tagged areas include Company, AI, Email, Consumer, and Productivity.

Buildforever’s developer surface includes engineering blog, support, changelog, getting-started guide, and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub
16.5/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.5
0 APIs
CompanyAIEmailConsumerProductivityGmailiOSArtificial Intelligence

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.5
Composite quality — 16.5/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 3.5 / 20
Commercial Clarity 4.2 / 20
Operational Transparency 2.1 / 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/buildforever: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Operate 2

Status, limits, changes, and where to get help

Support
Support
 ChangeLog
ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy
 TermsOfService
TermsOfService

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: buildforever
name: Buildforever
description: BuildForever is a consumer software company building products that feel personal, magical, and deeply human.
  Its first product, Extra (extra.email), is a free AI email app for iPhone, Mac, and Gmail that automatically organizes the
  inbox into smart categories, summarizes what matters in a daily digest, cleans up subscriptions and unwanted senders, answers
  natural-language questions about your mail, and drafts replies in your own tone. Founded and led by CEO Naveen Gavini (formerly
  SVP/CPO at Pinterest), BuildForever is backed by Abstract Ventures, Felicis, and DST Global, with angel investors including
  Ben Silbermann, Guillermo Rauch, and Paul Buchheit. The company does not currently publish a public developer API; this
  profile captures its consumer product surface and identity.
url: https://raw.githubusercontent.com/api-evangelist/buildforever/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- felicis
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://buildforever.com/logo.svg
tags:
- Company
- AI
- Email
- Consumer
- Productivity
- Gmail
- iOS
- Artificial Intelligence
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://buildforever.com
- type: Blog
  url: https://buildforever.com/engineering
- type: Support
  url: https://buildforever.com/contact
- type: ChangeLog
  url: https://extra.email/changelog
- type: PrivacyPolicy
  url: https://extra.email/privacy
- type: TermsOfService
  url: https://extra.email/terms
- type: GettingStarted
  url: https://extra.email/why-extra
- type: LLMsTxt
  url: llms/buildforever-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence