Private test inboxes
Create disposable or persistent inboxes per test run, tenant, customer, environment, or QA workflow.
Use email sandbox
Use MailSlurp when Testmail-style inbox automation needs inbox automation, receive-side assertions, SDK coverage, and end-to-end email QA in CI. Keep inboxes, APIs, webhooks, diagnostics, and automated checks in one workflow.
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MailSlurp gives each test, environment, team, or customer workflow its own inbox, phone number, webhook, and API-controlled message history.
Create inboxes, receive messages, extract codes, assert content, and route inbound events without shared mailbox state.
Create disposable or persistent inboxes per test run, tenant, customer, environment, or QA workflow.
Use email sandboxExtract verification codes and login links from real emails so browser tests can continue reliably.
Test authenticationWait for messages, inspect bodies and links, and fail tests when release-critical email regresses.
Explore integrationsRoute received-message events into QA systems, queues, support tooling, and application tests.
Use webhooksCover signup, MFA, password reset, mobile verification, and notification checks from one platform.
Add SMS testsKeep searchable message history, raw content, attachments, and test artifacts available to the team.
Read docsMailSlurp keeps Testmail-style inbox automation connected to real inboxes, APIs, webhooks, diagnostics, and repeatable checks.
MailSlurp gives teams private inboxes, receive APIs, OTP extraction, webhooks, SDKs, and repeatable checks for real product email.
Start with one high-value message, automate the check, then expand the same MailSlurp workflow across the email and SMS flows customers depend on.
Teams working on Testmail alternative needs can use MailSlurp to run inbox automation, receive-side assertions, SDK coverage, and end-to-end email QA in CI against real messages and controlled inboxes.
That keeps the result visible to engineers, QA, support, and lifecycle teams without relying on shared mailboxes or one-off screenshots.
Manual inbox checks are quick at first, but they become hard to repeat across staging, CI, and production support. MailSlurp lets teams create fresh inboxes, wait for messages, inspect content, and clean up automatically.
That makes the same email workflow usable by engineers, QA, support, and release managers without sharing personal mailboxes or relying on public inboxes.
MailSlurp works from APIs, SDKs, webhooks, dashboards, and CI pipelines, so the same checks can run during development, staging, release, and support.
Use it to inspect the final message, verify links and codes, monitor deliverability signals, and keep customer-facing email reliable as templates, senders, domains, and applications change.
Integrate 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.
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Infrastructure that scales.
Mobile networks
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Leverage global telecom networks.
Mature platform
10+ years
Stable and dependable.