Integrate with any framework
Official plugins and SDKs for all major programming languages, frameworks, and test platforms. All functionality available via API or dashboard.
Test signup, OTP, password reset, and notification flows with real messages
MailSlurp gives QA and engineering teams programmable inboxes and phone numbers for integration tests. Create test identities, wait for email or SMS, extract codes and links, assert message content, and keep CI release gates deterministic.
Trusted by top companies worldwide
Provision a fresh inbox or phone number for every test run
Create disposable email addresses and programmable phone numbers on demand, then control email and SMS from Playwright, Cypress, Selenium, Jest, or your own integration test harness.
Wait for the exact message, then assert the payload
Use bounded waits, sender and subject matching, regex extraction, attachment inspection, webhook events, and SDK helpers so email and SMS tests fail with useful evidence instead of timing noise.
Integrate MailSlurp Seamlessly
CI/CD Native
MailSlurp fits right into your existing development, testing, and CI/CD workflows. Deploy and iterate with confidence and actionable feedback.
Extend journey tests with rendered message proof
After CI proves the signup, OTP, reset, or notification flow completes, use MailSlurp device previews and email audit checks to review the delivered message, verify links, and keep evidence for the next release.
Email and SMS integration workflows MailSlurp supports
Cover the customer journeys that usually break quietly: authentication, onboarding, payments, alerts, and inbound automation.
OTP and MFA checks
Receive SMS and email codes in code, extract the OTP, and complete the same verification flow customers use.
Signup and magic links
Create a real inbox, trigger signup or invite email, extract the link, and continue the browser journey.
Password reset coverage
Assert reset sender, subject, link, token, and timing before authentication changes reach production.
Attachments and headers
Inspect MIME parts, headers, files, recipients, links, and message metadata from API responses.
Parallel CI isolation
Create inboxes and numbers per worker so tests do not collide across parallel builds or shared staging data.
Device previews and audits
Preview important delivered emails and audit links or assets after the core browser or API journey passes.
Automated email testing questions
Keep browser tests independent while checking the same signup, OTP, reset, and notification messages customers rely on.
How can I extract an email OTP inside a Cypress test?
Create a MailSlurp inbox for the Cypress test, submit its address through your signup or login flow, then wait for the matching message through the MailSlurp API. Extract the OTP with a pattern, enter it in the browser, and keep the received email with the test result when a failure needs investigation. Read the Cypress email testing guide.
How do I test signup emails in Playwright without shared Gmail?
Provision a fresh MailSlurp inbox in the Playwright test or worker fixture and use that address during signup. The test can wait for the real delivered email, open its verification link, and finish the browser journey without shared credentials, inbox cleanup, or messages left by another run. Read the Playwright email testing guide.
How do I create an isolated inbox for every automated test run?
Call the MailSlurp inbox API during test setup and store the new inbox ID and email address with that run. Create one inbox per worker or scenario, apply an expiry when appropriate, and wait by inbox ID so parallel builds never read one another's messages. Read the inbox creation guide.
Video walkthroughs
Test user signup OTP and MFA with the Playwright recorder
Use the Playwright codegen recorder for no-code testing
Postman integration testing with real email accounts
Open emails and click links in Selenium with C#
No-code automation testing with Playwright Codegen
Open emails in Cypress for newsletter signup testing
Test password reset email with Node.js and Vitest
Testing workflows at production scale
Messages processed
500 million+
Scale for CI, staging, and production checks.
Channels covered
Email + SMS
One platform for inboxes, phone numbers, OTP, and webhooks.
Mature platform
10+ years
Stable APIs for long-running test suites.