Mailcatcher alternative for email and SMS automation

Hosted test inboxes, SMS workflows, native SDKs, and no-code dashboards for teams that need reliable email testing beyond a local SMTP capture tool.

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Mailcatcher alternative for email and SMS automation

Trusted by teams at

Used by engineering, QA, lifecycle, and operations teams building and testing email and SMS workflows.

Email and SMS testing workflows

Quality assurance

Run QA checks against private MailSlurp inboxes so staging messages do not reach real customers.

Email receipt testing

Confirm that signup, password reset, notification, and bulk delivery workflows arrive in private MailSlurp inboxes.

Load testing

Evaluate the resilience of your email systems by subjecting them to load testing in a secure development environment with MailSlurp.

User interactions

Create repeatable email and SMS interaction tests with APIs, webhooks, dashboards, and CI-friendly assertions.

Test with real email and SMS

Fully featured email and SMS APIs that go beyond anything Mailcatcher offers. Create unlimited team inboxes and phone numbers then send and receive messages in code, tests, and no-code dashboards.

// create mailslurp client
const { MailSlurp } = require('mailslurp-client');
const mailslurp = new MailSlurp({ apiKey: process.env.API_KEY });

// create inboxes
const inbox1 = await mailslurp.createInbox();
const inbox2 = await mailslurp.createInbox();

// send email
await mailslurp.sendEmail(inbox1.id, {
  to: [inbox2.emailAddress],
  subject: "Test",
  body: "<span>Hello 👋</span>",
  isHTML: true
})

// receive email using wait methods
const email = await mailslurp.waitForLatestEmail(inbox2.id, 60000, true)
expect(email.body).toContain("Hello")

// list emails in inbox
const emails = await mailslurp.inboxController.getInboxEmailsPaginated({inboxId: inbox2.id})
expect(emails.numberOfElements).toEqual(1)

Modern APIs and SDKs

Control email and SMS in code using native SDKs in Java, C#, NodeJs, PHP, Python and more.

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Move beyond local-only email capture

Use MailSlurp for hosted email and SMS testing across code, dashboards, and CI.

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