Practical guides on private inboxes, agent-friendly email, verification testing, and infrastructure that stays out of your way.
A disposable email API is an inbox lifecycle contract—not a single POST that returns a string. Scope keys, poll with deadlines, and treat MIME as untrusted input.
Stop guessing six digits from a verification email. Match the right message, extract one OTP with confidence checks, and keep parallel CI workers from stealing each other's codes.
Playwright can drive the signup UI perfectly and still fail on email. Provision an inbox in the fixture, poll with a deadline, and assert OTP ambiguity never passes silently.
Learn when temporary email improves privacy, how to choose a trustworthy inbox, and which habits prevent verification mail from becoming a security risk.
Connect Cursor or Claude to Relay MCP with scoped keys, explicit tool approval, and email content kept below the instruction boundary.
Use the Relay browser extension to create inboxes, read verification messages, copy OTPs, and inspect magic links without storing an API key.
Use Relay webhooks to move from polling to event-driven email automation with signed requests, retries, idempotency, and safe message handling.
Relay's OpenAI-compatible JSON document makes email tools discoverable to AI integrations while keeping inbox access scoped and predictable.
Connect Python test suites and services to Relay with a focused client for inboxes, messages, OTP extraction, and deterministic email verification.
The Relay CLI turns inbox creation, message inspection, OTP extraction, and webhook checks into repeatable terminal workflows for developers and CI.