Shared workspaces
Give engineering, QA, and operations teams one place to work.
Build, test, and automate email and SMS workflows
MailSlurp gives engineering, QA, and operations teams one place to create inboxes, provision phone numbers, test OTP and MFA flows, route inbound messages, and monitor deliverability before issues reach customers.
Trusted by teams at
Platform pillars
Start with the product area that matches your next workflow
Choose the part of MailSlurp that fits the problem you need to solve now, whether that is an email API, SMS verification, release testing, or inbound automation.
Create inboxes, inspect received messages, and run inbound email workflows under API control.
Programmable inbox APIsEmail sandboxesDomain and compliance controls
SMS and Mobile
ExploreProvision real numbers, send and receive SMS, and validate OTP flows with the timing and delivery behavior your app depends on.
Real phone numbersOTP and MFA testingGlobal SMS APIs
Testing
ExploreTest signup, login, password reset, and campaign workflows before they fail in release.
End-to-end test helpersEmail auditing and reliability checksDevice and domain monitors
Automations
ExploreRoute inbound messages, trigger webhooks, and turn email content into structured downstream actions.
Webhooks and eventsRouting and forwardingAI extraction pipelines
Governance and audit trails
Support regulated workflows with visibility, retention, and control.
APIs and SDKs
Production-ready APIs with generated SDKs.
QA and ops visibility
Monitor inboxes, tests, and routing without forcing everything through code.
Messaging APIs
Email API and SMS workflows in one platform
Create inboxes, provision phone numbers, send and receive messages, and connect those events to the systems your team already runs.
- Create inboxes and phone numbers on demand
- Send and receive with unified APIs
- Use generated API clients across major languages
messaging-workflow.ts
const inbox = await mailslurp.createInbox();
await mailslurp.sendEmail(inbox.id, {
to: [inbox.emailAddress],
subject: 'Hello',
body: 'Welcome',
});
const sms = await mailslurp.waitController.waitForLatestSms({
waitForSingleSmsOptions: {
phoneNumberId: phone.id,
timeout: 30_000,
unreadOnly: true,
},
});
await mailslurp.webhookController.createWebhook({
inboxId: inbox.id,
webhookOptions: {
url: 'https://my-server.com/webhook',
eventName: CreateWebhookOptionsEventNameEnum.NEW_EMAIL,
},
});
18+ SDKs and integrationsEmail APISMS APIWebhooksSMTP and IMAPSDK clients
Real E2E testing
Test OTP, MFA, and notification flows with real messages
Validate sign-up, login, and recovery journeys using real email and SMS channels in CI, staging, and release pipelines.
- Test OTP and MFA code retrieval end to end
- Validate magic links and auth notifications
- Reduce flaky auth tests with deterministic waits
Rendering and audits
Review templates, links, and sender health before launch
Built for marketing, campaign operations, and non-developer teams that need fast visual QA, link checks, and deliverability audits before every send.
- Preview email rendering across clients and devices
- Audit links, images, and template compatibility
- Monitor domain auth and sender reputation signals
External connectionsAI labelingStructured extractionRouting and forwarding
Powerful automations
Route inbound email and automate downstream work
Turn inbound messages into webhook events, structured records, and clear handoffs instead of leaving work trapped in shared inboxes.
- Webhook-triggered workflows and rulesets
- AI labeling and structured data extraction
- Connections for ops, analytics, and CRM systems
Why teams buy
Move faster without losing control of customer messaging
Ship workflows faster
Cut implementation cycles with APIs, SDKs, and reusable test helpers.
Reduce production incidents
Catch broken templates, auth-message failures, and routing issues before release.
Improve deliverability confidence
Monitor domain health and sender quality across ongoing campaigns and operations.
Stay audit ready
Use governance controls and message-level visibility for security and compliance teams.
Choose by team
Start with the team or workflow that needs the fix first
Engineering
Build and scale messaging infrastructure with APIs, SDKs, and automation workflows.
QA and test automation
Run robust E2E testing for sign-up, login, OTP, and transaction messaging across CI.
Marketing and lifecycle
Audit rendering, catch campaign defects, and monitor sender quality before every launch.
Security and compliance
Apply controls, establish audit trails, and standardize message operations across teams.
Security and compliance
Enterprise controls for messaging workflows
- Governance controls for cross-functional teams
- Operational visibility for compliance and security stakeholders
- Process patterns aligned to SOC2, GDPR, and regulated environments
SOC2-ready workflowsGDPR supportAudit-friendly controls
Integrations and ecosystem
Connect to the systems you already run
API and SDK integrationsWebhook event pipelinesSMTP and IMAP accessGmail and mailbox workflowsNo-code and low-code automationCRM and analytics pipeline handoff
Pricing and plans
Start free, then add scale and support when you need it
Start free
Build proof-of-concepts and validate workflows with immediate API access.
Scale in production
Increase throughput and operational coverage for live messaging systems.
Enterprise
Coordinate teams, governance, and support for high-stakes messaging operations.
FAQ
Common questions
What is the difference between an email sandbox and a programmable inbox API?
An email sandbox is ideal for safe test traffic and non-production checks. A programmable inbox API gives you managed inbox workflows you can automate in apps, QA pipelines, and operational processes.
Can MailSlurp test OTP and MFA flows for email and SMS?
Yes. You can provision inboxes and phone numbers, wait for incoming messages, and assert OTP codes and auth links in end-to-end tests across CI pipelines.
Is MailSlurp useful for marketing and campaign operations teams?
Yes. Teams use MailSlurp for email rendering checks, broken-link and image audits, sender reputation monitoring, and pre-send quality controls.
Does MailSlurp support enterprise security and compliance requirements?
MailSlurp supports enterprise controls such as access governance, audit-oriented workflows, and deployment patterns for regulated teams. Contact sales for environment and compliance scope details.
What integrations and connection options are available?
MailSlurp supports API and SDK integrations, webhooks, SMTP and IMAP access, and workflow automation patterns for internal platforms and external business systems.
Can we start free and scale into production later?
Yes. You can start with a free account, validate workflows, then move to production plans with higher limits, governance, and support options.
Explore by pillar
Explore the platform by product area
Need a throwaway email generator for QA and signup tests?
Use disposable inboxes for quick checks, then move critical flows to private API inboxes and email sandbox release gates. Start with thethrowaway email guidefor model selection and risk boundaries.