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.
Index entry only — little beyond a description and a link, and nothing machine-readable enough for an agent to act on without a human reading the site first.
Sigstr is tracked in the API Evangelist network. This page is the human-readable profile that sits on top of the machine-readable index we maintain at apis.io.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Sigstr scores 6.8/100 (minimal), with a separate agent-readiness read of 0/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
Sigstr is in the network as a tracked entity. We haven't yet indexed a public API surface for it — when one is published, the artifacts, score, and agent-readiness read will appear here automatically. The source repository is where that profile is built.
← All providers · Data indexed from github.com/api-evangelist/sigstr · machine-readable index on apis.io