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SendHQ Deliverability API

Inspect events, reputation outcomes, and blocked recipients.

SendHQ Deliverability API is one of 8 APIs that SendHQ publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Deliverability. The published artifact set on APIs.io includes an OpenAPI specification, an API reference, API documentation, and a getting-started guide.

This API exposes 4 operations across 4 paths, and defines 1 schema. It is described by OpenAPI 3.2.0, at version 2026-08-23.

Requests are made against a single base URL, https://sendhq.cc/api/v1.

4 operations 4 paths 1 schemas 1 DELETE3 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2026-08-23
Base URL
https://sendhq.cc/api/v1
Authentication
HTTP Bearer, API Key
Resource Areas
1

Authentication & Security 2

SendHQ Deliverability API declares 2 security schemes for authenticating requests. It accepts HTTP bearer tokens (re_…) (bearerAuth). An API key is passed in the cookie as sendhq_session_v2 (sessionCookie).

  • bearerAuth — Workspace API key. Keep it server-side.
  • sessionCookie — Browser session used for account administration.

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 1 DELETE, 3 GET. Each is listed below with its method, path, parameters, and response codes.

Deliverability 4

Inspect events, reputation outcomes, and blocked recipients.

GET
/deliverability/stats
Retrieve 30-day delivery statistics
get_deliverability_stats → 200400401404429
GET
/suppressions
List workspace suppressions
get_suppressions → 200400401404429
DELETE
/suppressions/{email}
Remove an eligible bounce suppression
delete_suppressions_email 1 param → 200400401404429
GET
/blocked-recipients
List bounces, complaints, and unsubscribes
get_blocked_recipients 1 param → 200400401404429

Schemas 1

The contract defines 1 schema that model the data the API accepts and returns. The most detailed is Error (1 property). Each schema is shown below with its type and property counts.

Error
object
1 property 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

sendhq-deliverability-api-openapi.yml Raw ↑

Other APIs SendHQ publishes across the network.

SendHQ Account and billing API
SendHQ Domains API
SendHQ Drafts and attachments API
SendHQ Emails and threads API
SendHQ Hosted templates API
SendHQ Inbound email API
SendHQ REST API
Where this information came from

This is an independent, third-party profile of SendHQ Deliverability API, 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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