Mail catch for staging, QA, and release review

Capture outbound email in programmable inboxes and SMTP sinks so teams can inspect content, links, headers, and attachments before customer traffic goes live.

Create free account Inbox and SMTP docs

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Product features

MailSlurp features for mail catch and safe outbound review

Catch outbound email in programmable inboxes so QA, staging, and release teams can inspect messages before they reach customers.

Provision isolated inboxes per build, test, or environment

Create fresh inboxes for local development, QA runs, preview environments, and release checks so each workflow keeps its own message history.

Read inbox docs

Catch outbound mail with SMTP or no-send delivery modes

Route transactional and lifecycle email into MailSlurp inboxes or virtual no-send inboxes while the workflow is still under review.

Start mail sandbox

Inspect HTML, text, headers, links, and attachments

Review the delivered message artifact in full so broken templates, wrong recipients, or missing files never become customer-visible incidents.

Inspect test email

Wait for messages and keep reproducible QA records

Use MailSlurp wait APIs and stored message records so engineering, QA, and product can review the same output and fail builds on real regressions.

Automate wait checks

Staging and pre-release notification review

Review signup, password reset, billing, and lifecycle email before it reaches real recipients. MailSlurp stores the exact message so teams can review it with confidence.

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Safe local, QA, and CI email testing

Point apps and test environments at MailSlurp inboxes so developers and QA can exercise real send paths without leaking mail to customers, vendors, or internal groups.

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Template and workflow regression checks

Catch broken copy, missing variables, wrong links, and attachment issues early by storing and inspecting the exact messages each workflow produced.

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Provision inboxes on demand

Create isolated addresses for users, tenants, releases, or tests without shared mailbox state.

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Provision isolated inboxes per build, test, or environment

Create fresh inboxes for local development, QA runs, preview environments, and release checks so each workflow keeps its own message history.

Read inbox docs

Catch outbound mail with SMTP or no-send delivery modes

Route transactional and lifecycle email into MailSlurp inboxes or virtual no-send inboxes while the workflow is still under review.

Start mail sandbox

Inspect HTML, text, headers, links, and attachments

Review the delivered message artifact in full so broken templates, wrong recipients, or missing files never become customer-visible incidents.

Inspect test email

TSvirtual-inbox.ts

const sent = await mailslurp.inboxController.sendEmailAndConfirm({
    inboxId: mailTrap.id,
    sendEmailOptions: {
        to: [customer.emailAddress],
        subject: 'Test email',
        body: 'This is using a virtual inbox and will not be sent to real customers',
    },
});
expect(sent.to).toContain(customer.emailAddress);
expect(sent.virtualSend).toBeTruthy();

Capture outbound mail without risking customer delivery

Create safe inboxes for staging, QA, and release review so teams can inspect the exact message content without leaking traffic outside the sandbox.

Open docs

TSvirtual-inbox.ts

const sent = await mailslurp.inboxController.sendEmailAndConfirm({
    inboxId: mailTrap.id,
    sendEmailOptions: {
        to: [customer.emailAddress],
        subject: 'Test email',
        body: 'This is using a virtual inbox and will not be sent to real customers',
    },
});
expect(sent.to).toContain(customer.emailAddress);
expect(sent.virtualSend).toBeTruthy();

Provision safe inboxes for staging, QA, and CI runs
Inspect delivered content, links, headers, and attachments before release
Keep saved message records and review steps inside one API workflow

Integrate MailSlurp Seamlessly

Integrate with any framework

Official plugins and SDKs for all major programming languages, frameworks, and test platforms. All functionality available via API or dashboard.

CI/CD Native

MailSlurp fits right into your existing development, testing, and CI/CD workflows. Deploy and iterate with confidence and actionable feedback.

Developer Integrations

Global messaging scale

Emails processed

500 million+

Infrastructure that scales.

Mobile networks

20+

Leverage global telecom networks.

Mature platform

10+ years

Stable and dependable.