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What is MailSlurp?

APIs and dashboards for developers, Q.A. and marketing teams to build messaging workflows, write tests, and improve deliverability.

Messaging

Create and control unlimited email accounts and phone numbers.

Inboxes

Create disposable and permanent inboxes on demand. Use aliases, plus-addresses, custom domains and external connections to Gmail, Outlook, and more.

Explore email

Mobile

Connect real mobile numbers (non-voip) from dozens of countries and mobile networks. Send and receive SMS/MMS at scale with high quality numbers and reliable infrastructure.

Explore phone numbers

Messaging workflows

Use one control plane for programmable inboxes, message routing, notifications, and customer-owned email paths.

Explore messaging

Mail catch

Capture outbound and inbound email safely during development, staging, and release checks before messages reach customers.

Explore mail catch

Email API

Build programmable inbox, sending, receiving, and webhook workflows with REST, SMTP, IMAP, and SDK support.

Explore Email API

Testing

Test applications and workflows end-to-end with real email and SMS

Test OTP/MFA end-to-end

Use real email accounts and phone numbers to test critical application flows like user sign-up, email verification, password reset, and more.

Explore E2E testing

Load test email & SMS

Create parameterized load test cases then execute with industry tools like JMeter and K6. Time, test, and simulate messaging load.

Explore load testing

Email load testing guide

Plan realistic load tests for signup, reset, invite, and notification flows that depend on real email or SMS delivery.

Open load testing guide

k6 email and SMS tests

Run k6 scripts that create inboxes, send messages, wait for replies, and measure verification-path latency under load.

Open k6 workflow

Delivery

Improve delivery, sender health, and campaign readiness with repeatable inbox evidence.

Automated spam-tests

Run inbox placement tests and spam checks across Gmail, Outlook, Yahoo, iCloud, and other mailbox-provider environments before important sends.

Explore inbox placement testing

Email compatibility and content QA

Preview rendering, inspect HTML support, and catch broken links, missing images, and template issues before campaigns or transactional emails launch.

Explore compatibility testing

Domain monitoring

Track DMARC, SPF, DKIM, MX, and sender-domain drift before migrations, vendor changes, or launch windows create incidents.

Explore DMARC monitoring

Campaign probe

Audit recurring campaign streams with probe addresses that catch broken links, missing images, and template drift over time.

Explore campaign probe

Sender monitoring

Monitor message workflows, sender health, and delivery drift so teams can catch silent failures before customers do.

Explore monitoring

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.

Flexible integration patterns

CI/CD Native

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

Validation

Preview and inspect email content across devices and providers.

Email previews and real-device rendering

Preview delivered email across Gmail, Outlook, Yahoo, mobile, desktop, and dark-mode clients before customers see it.

Explore email previews

Email audit

Find broken links, template errors, and missing images fast. Audit HTML and CSS for compatibility against a vast database of client features.

Explore email audit

Transformation

Extract structured data from emails and attachments using AI and OCR

AI email parser

Use AI prompts, OCR, labels, and JSON schemas to extract structured data from inbound emails, PDFs, images, and attachments.

Explore AI email parser

Data pipelines

Connect smart data extraction with webhooks, forwarding and connections to Google Sheets, and popular data sinks.

Explore routing automation

Identity

Email intelligence and phone number lookup

Verify and clean

Clean email lists and verify email accounts. Improve sending and flag high risk customers.

Explore identity

Lookup and enrich

Lookup phone and email entities for customer insights and corporate intelligence

Explore enrichment

Email validation API

Validate addresses at signup, onboarding, and lifecycle handoffs before bad data reaches customer systems.

Explore validation API

Evaluation

Proof and partner paths for teams reviewing MailSlurp.

Customer proof

Read customer reviews and workflow examples when you need evidence for procurement, rollout, or renewal.

Read testimonials

Affiliate program

Recommend MailSlurp to developer, QA, and automation teams with partner resources built for technical audiences.

Explore affiliate program