Best-TempMail API is a developer-focused disposable email infrastructure built for QA testing, CI/CD pipelines, automated signup testing, verification workflows, and applications that need reliable temporary inboxes without maintaining their own mail infrastructure.
Create temporary inboxes, receive real emails, and process messages programmatically through a simple REST API. The platform is built with configured email infrastructure focused on deliverability, including strict SPF, DMARC reject policies, TLS encryption, and clean reverse DNS to help avoid blocked or rejected messages.
Built for Real-Time Email Automation
Deliverability-focused infrastructure: Strict SPF, DMARC reject policies, TLS encryption, and clean reverse DNS are configured to support reliable email delivery and reduce common deliverability problems.
WebSocket support on every plan: Receive new messages in real time without repeatedly polling the API. WebSockets are available on Free, Founders/Developer, and Pro plans.
Wait endpoint: Hold a connection until a new message arrives, providing a lightweight alternative to frequent polling.
Temporary inboxes: Create random or customized inboxes and control their lifetime according to your plan.
OTP extraction: Automatically extract verification codes from incoming messages without writing custom parsers for every sender.
Webhooks: Push new-message events directly to your own server as soon as mail arrives.
Official SDKs: Integrate quickly with Node.js and Python.
MCP server: Connect temporary email capabilities to AI assistants and MCP-compatible tools such as Claude Desktop, Cursor, and VS Code.
OpenAPI specification: Import the API into Postman or Insomnia or generate clients for other programming languages.
The API provides everything needed to automate the complete email-testing lifecycle: create an inbox, receive a message, wait for incoming mail, read its contents, extract verification codes, inspect metadata, and delete the inbox when testing is complete.
Security and automation controls are built into the platform. Paid inboxes are isolated to their API key, webhook deliveries include HMAC signatures for verification, and rate-limit headers allow applications to manage their usage programmatically.
A free, keyless tier lets developers start testing without registration or an API key. Paid plans add higher limits and advanced automation features such as webhooks, OTP extraction, longer-lived inboxes, and attachment downloads, while WebSocket-based real-time delivery remains available across all plans.
Whether you are testing registration flows, verifying email-based authentication, running automated QA, building CI/CD tests, or integrating disposable email into a developer tool, Best-TempMail API provides purpose-built temporary email infrastructure that can be integrated directly into your workflow.
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