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 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. The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
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
This is an independent, third-party profile of Sigstr, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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