Sigstr

Sigstr was an Indianapolis-based email signature marketing and account-based marketing (ABM) platform that turned employee email signatures into a targeted marketing channel, backed by Battery Ventures and other investors. It was acquired by Terminus in September 2019 and folded into the Terminus platform as its Email Experiences / signature marketing product; the standalone Sigstr brand has since been retired. As of this enrichment pass the sigstr.com domain is a parked WP Engine page (HTTP 404), no api./developer. hosts resolve, and app.sigstr.com CNAMEs to Terminus infrastructure (email2.terminusplatform.com) — the company publishes no public API surface to enrich.

Sigstr is profiled on the APIs.io network. Tagged areas include Company, Email, Email Signature, Marketing, and Account Based Marketing.

📡 Profile data on GitHub
AccessNo public API
0 APIs
CompanyEmailEmail SignatureMarketingAccount Based MarketingMarTechAcquired

Source (apis.yml)

apis.yml Raw ↑ 
aid: sigstr
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  gated: private
  gated_source:
  - x-api-posture
  label: Unknown
  confidence: low
  source: []
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sigstr.png
name: Sigstr
description: Sigstr was an Indianapolis-based email signature marketing and account-based marketing (ABM) platform that turned
  employee email signatures into a targeted marketing channel, backed by Battery Ventures and other investors. It was acquired
  by Terminus in September 2019 and folded into the Terminus platform as its Email Experiences / signature marketing product;
  the standalone Sigstr brand has since been retired. As of this enrichment pass the sigstr.com domain is a parked WP Engine
  page (HTTP 404), no api./developer. hosts resolve, and app.sigstr.com CNAMEs to Terminus infrastructure (email2.terminusplatform.com)
  — the company publishes no public API surface to enrich.
url: https://raw.githubusercontent.com/api-evangelist/sigstr/refs/heads/main/apis.yml
x-api-posture: no-product-api
x-api-posture-basis: observed
x-api-posture-note: As of this enrichment pass the sigstr.com domain is a parked WP Engine page (HTTP 404), no api./developer.
  hosts resolve, and app.sigstr.com CNAMEs to Terminus infrastructure (email2.terminusplatform.
x-type: company
x-source: vc-portfolio
x-backed-by:
- battery-ventures
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-acquired-by: terminus
x-acquired-date: 2019-09
x-api-surface: none
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Email
- Email Signature
- Marketing
- Account Based Marketing
- MarTech
- Acquired
tags_raw:
- Company
- Email
- Email Signature
- Marketing
- Account-Based Marketing
- Martech
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: nochange
  artifacts_added: 0
  pass: local-v1

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