Magic-link login
Wait for login emails, extract the delivered link, and complete the auth flow with evidence from the real message.

Release auth changes with evidence. MailSlurp lets teams validate email OTP, SMS OTP, magic-link, and recovery flows using real inboxes and phone numbers.
Trusted by top companies worldwide




Create isolated inboxes, trigger your app flow, wait for the message, and assert links or codes before a release reaches customers.
Use real phone numbers to capture OTP messages, assert timing, and test recovery, enrollment, and fallback behavior in staging and CI.
Use real inboxes and phone numbers so auth testing proves the delivered message path, not only the browser click path.
Wait for login emails, extract the delivered link, and complete the auth flow with evidence from the real message.
Capture one-time passcodes from real inboxes and assert timing, content, resend behavior, and downstream state.
Provision real phone numbers for SMS OTP, phone verification, and recovery workflows.
Open SMS numbersTest reset links and timeout behavior with deterministic waits instead of shared inbox checks.
Combine email, SMS, and authenticator-device checks for deeper MFA coverage.
Keep message IDs, extracted codes, links, and failure context available for QA and engineering review.
Open testing platformIntegrate MailSlurp Seamlessly
Official plugins and SDKs for all major programming languages, frameworks, and test platforms. All functionality available via API or dashboard.

MailSlurp fits right into your existing development, testing, and CI/CD workflows. Deploy and iterate with confidence and actionable feedback.
Emails processed
500 million+
Infrastructure that scales.
Mobile networks
20+
Leverage global telecom networks.
Mature platform
10+ years
Stable and dependable.