Email and SMS Workflow Testing

Mailinator allows Developers and QA Testing teams to automatically test their SMS and Email workflows like 2FA verifications, sign-ups, and password resets with trillions of inboxes at your fingertips. Whether you do Manual Testing, use an API, or a framework like Selenium, Cypress, Playwright, or Puppeteer - Mailinator will close the loop on email/SMS testing.

Mailinator inbox on macbook


Mailinator is Your Private Message Routing System

QA Testing Teams and Developers around the globe use Mailinator to route email and SMS messages with an ever-growing set of features, including webhooks and our API. 

Mailinator chart of email and sms workflow interactions

Application Features

Mailinator offers a robust feature set to ensure that your email and SMS workflows remain intact and operational.

Mailinator Email Workflow Testing

Quality Assurance

Utilize Mailinator to perform your QA testing on your email delivery systems, without risking sending to a real-life audience.

Email Receipt Testing

Verify that you bulk email delivery services are working as intended with Mailinator’s public inbox.

Load Testing

Test the resiliency of your email systems by performing load testing in a safe, development environment with Mailinator.

Email Interactions

Transform how you communicate with customers by utilize our platform to develop and test email and SMS interactions.

Mailinator's Free Disposable Email

Mailinator still offers a 100% free, public disposable email system. You can use any address and check those public inboxes by entering the public inbox in the field below.

Mailinator Subscription Plans

Verified Pro



with Verification
  • Our Free plan for a single user looking to gain efficiency for automating the testing of their workflows with the benefit of a private domain and access to our API



Per Month
  • An ideal plan for a small team looking to gain efficiency for automating the testing of their workflows with the benefit of a private domain and access to our API.



Per Month [Starting At]
  • Enterpise plans are custom built for your unique needs. This plan can accommodate high volumes, custom features, custom terms, or bespoke onboarding support.

Recent Blog Posts

Okta Certification & Mailinator

Creating a Mailinator Verified Pro account and preparing for an Okta certification test is a streamlined process designed to enhance your learning and testing experience. This blog post will guide you through obtaining a Mailinator Verified Pro account and using it to take your Okta certification test, focusing on the Okta Professional Hands-On Configuration Exam […]

Enhancing Security and Efficiency in MFA/OTP Verification with Mailinator

In the rapidly evolving digital world, the security of online transactions and communications is paramount. Multi-Factor Authentication (MFA) and One-Time Passwords (OTP) have become critical components in protecting user data and preventing unauthorized access. However, implementing these security measures effectively requires rigorous testing. This is where a service like Mailinator, with its provisionless process of […]

Feature Update: Webhook to Slack

The plumbers have added a new pipe! One of our favorite ways users can interact with messages in Mailinator is via webhooks. This week we take a look at our newest Feature Update: Webhook to Slack. What is a webhook? If you’re not familiar, a webhook is an automated HTTP request that is triggered by […]

Asking ChatGPT to analyze a Mailinator SMTP Log

We asked ChatGPT to analyze a random Public Mailinator SMTP Log. It gave some pretty impressive results, especially since the SMTP Log in this format is simply formatted for humans, not machines. (The Mailinator API allows you to get and SMTP log formatted in JSON) Analyze this SMTP transaction – explain anything interesting: 0ms SOCKET_OPEN […]