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  • Getting started
    • Overview
  • Messaging API
      • Overview
      • Batch send emails
      • Batch email idempotency
      • Schedule emails
      • Sandbox mode
      • Weekly event exports
      • Delete transactional logs
      • Parse inbound email
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    • Send transactional WhatsApp
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    • Add a domain
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    • Getting started
      • Overview
      • Identify users
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      • Track custom events
      • Overview
      • Identify users
      • Track link clicks
      • Track page views
      • Track custom events
    • Legacy tracker documentation
      • Overview
      • Event endpoints
  • Accounts & settings
      • Overview
      • Sender creation and management
      • Domain creation and management
      • Domain authentication and validation
    • User activity logs
      • Overview
      • External feeds management
      • Overview
      • Invited users management
    • Status | API & Platform
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  • Overview
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  • Overview
  • Batch send emails
  • Batch email idempotency
  • Schedule emails
  • Sandbox mode
  • Weekly event exports
  • Overview
  • Postfix integration
  • Node.js SMTP example
  • Delete transactional logs
  • Parse inbound email
  • Send transactional SMS
  • Send transactional WhatsApp
  • Add a domain
  • Create an API key
  • Campaigns
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  • Overview
  • Email webhooks
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  • Secure webhooks
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  • Getting started
  • Overview
  • Identify users
  • Track page views
  • Track link clicks
  • Track custom events
  • Overview
  • Identify users
  • Track link clicks
  • Track page views
  • Track custom events
  • Overview
  • Event endpoints
  • Overview
  • Sender creation and management
  • Domain creation and management
  • Domain authentication and validation
  • User activity logs
  • Overview
  • External feeds management
  • Overview
  • Invited users management
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On this page
  • Next steps
Messaging APISend transactional email

Sandbox mode

Test transactional sends without delivering to real recipients.

Test transactional sends without delivering to real recipients.

This guide is part of the Resent developer docs. See the API Reference for endpoint details.

Next steps

Send transactional email

Start with the core transactional email guide.

API reference

Full endpoint documentation.

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Schedule emails

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Weekly event exports

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