Use case

For developers building email checks into products and pipelines.

Use the WillItInbox API and SDKs to validate addresses, create deliverability tests, fetch reports, monitor usage, and automate webhooks.

API reference SDK docs

Build deliverability into your own workflow

WillItInbox exposes the same core workflows through authenticated endpoints so internal tools, CI checks, and product flows can use deliverability and validation evidence directly.

Validate signups, imports, or outbound lists through API calls.
Generate deliverability test addresses for QA workflows.
Fetch reports, PDFs, usage, and webhook delivery history.

Integration patterns

The API is useful for product validation, internal ops tools, scheduled hygiene, and release gates around important email templates.

REST API

Authenticated /api/v1 endpoints cover validation, bulk jobs, test inboxes, reports, webhooks, domains, DMARC, and usage.

SDKs

Dependency-light Node and Python clients live in the repo so teams can copy or package them quickly.

Webhooks

Bulk completion and monitoring workflows can POST signed events to your own endpoint for automation.