Best-TempMail Developer API
Best-TempMail Developer API is a developer-focused disposable email API built for reliable email testing, QA, automation, and privacy-conscious workflows. It provides programmatic temporary inboxes without requiring developers to build and maintain their own disposable email infrastructure.
The API lets developers create temporary email addresses, receive incoming messages, retrieve email contents, manage inboxes, and automate email-dependent workflows. It is designed for applications, scripts, testing frameworks, CI/CD pipelines, and automation systems that need reliable access to temporary email.
Built for Reliability
A major focus of Best-TempMail is the infrastructure behind the API. Rather than treating temporary email as a simple web mailbox, the service is built around dedicated email infrastructure designed to handle automated workflows reliably.
This makes the API useful for developers testing signup flows, email verification, OTP delivery, password resets, notifications, onboarding, and other workflows where receiving an email is an important part of the test.
Developers can create an inbox, trigger an email from the application being tested, retrieve the incoming message, extract a verification code or confirmation link, and continue the automated workflow without manually checking an inbox.
Real-Time WebSocket Delivery
Best-TempMail supports both REST API access and real-time WebSocket delivery.
Traditional email APIs often require applications to repeatedly poll an inbox to determine whether a message has arrived. WebSockets provide a faster alternative by allowing developers to maintain a connection and receive email events as they happen.
This can make automated testing more responsive and reduce unnecessary polling requests. For example, an end-to-end test can wait for a verification email through a WebSocket connection and immediately continue when the message arrives.
The combination of reliable email infrastructure, REST API access, and real-time WebSocket delivery is one of the core advantages of the Best-TempMail developer platform.
REST API and JSON
The API uses a straightforward REST architecture with JSON responses, making it compatible with virtually any programming language, framework, testing environment, or automation platform capable of making HTTP requests.
Developers can work with temporary inboxes programmatically, retrieve messages and mailbox information, manage inboxes, and monitor API usage. The API also provides rate-limit headers, request IDs, structured error responses, and health-check functionality to make integrations easier to monitor and troubleshoot.
Free API Tier
Developers can start with the free tier without creating an account or entering payment information.
Free — $0 forever
150 requests per hour
No API key required
All API endpoints
Real-time WebSocket delivery
3 inboxes per day
Commercial use
The free tier is suitable for experimenting with the API, building prototypes, running smaller test suites, and evaluating the infrastructure before upgrading.
Founders Plan
Early developers can access a limited Founders offer for $19.99 per year, compared with the standard Developer plan at $19.99 per month.
Founders — $19.99/year
Limited to the first 100 developers
2,000 requests per hour
API key included
All API endpoints
Real-time WebSocket delivery
Unlimited inbox creation
Commercial use
Founders rate locked while subscribed
The Founders plan is intended to give early API users substantially lower pricing while providing the higher limits needed for more demanding development and automation workloads.
The $19.99/year Founders rate remains locked while the subscription stays active. Once the 100 Founder places are filled, the standard Developer plan becomes the available paid option.
Developer Plan
The standard Developer plan costs $19.99 per month and provides the same 2,000 requests-per-hour capacity as the Founders plan.
Developer — $19.99/month
2,000 requests per hour
API key included
All API endpoints
Real-time WebSocket delivery
Unlimited inbox creation
Commercial use
Cancel anytime
This plan is designed for developers and teams that need sustained API access without relying on the limited Founders offer.
Developer-Focused Infrastructure
Best-TempMail is designed around the needs of developers rather than simply providing temporary email through a browser interface. The API can become part of an application's automated testing process, allowing email-dependent workflows to run without manual intervention.
Its combination of reliable email infrastructure, real-time WebSocket events, REST endpoints, structured responses, and flexible pricing makes it suitable for everything from individual development projects to automated QA workflows.
Developers can start free, test the API without an account or API key, and upgrade when their usage requires higher limits.
API Documentation: https://best-tempmail.com/api
