> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://mailchimp.com/developer/transactional/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://mailchimp.com/_mcp/server. # Mailchimp Transactional > Find all the Mailchimp API documentation and tools developers need to send marketing and transactional emails. ## Docs - [Transactional API Quick Start](https://mailchimp.com/developer/transactional/guides/quick-start.md): Use this guide to start using the Mailchimp Transactional API to send fast, personalized transactional emails. Learn how to make a Transactional API call. - [Send Your First Transactional Email](https://mailchimp.com/developer/transactional/guides/send-first-email.md): Configure your DNS and start sending transactional email using the Transactional API. - [Send Your First Transactional SMS](https://mailchimp.com/developer/transactional/guides/send-first-sms.md): Configure your account to start sending transactional SMS using the Transactional API - [Change Sending Behavior with the Rules Engine](https://mailchimp.com/developer/transactional/guides/change-behavior-rules-engine.md): Set up searchable criteria that trigger specific actions with your Mailchimp Transactional account. - [Manage Different Users with Subaccounts](https://mailchimp.com/developer/transactional/guides/manage-different-users-subaccounts.md): Monitor activity across multiple senders under a single Mailchimp Transactional account. - [Set Up Inbound Email Processing](https://mailchimp.com/developer/transactional/guides/set-up-inbound-email-processing.md): Use Mailchimp Transactional to receive, process, and parse inbound email. - [Track and Respond to Email Activity with Webhooks](https://mailchimp.com/developer/transactional/guides/track-respond-activity-webhooks.md): Respond to email events\u2014like message opens and link clicks\u2014using webhooks. - [How to Use Mailchimp's Transactional Messaging MCP](https://mailchimp.com/developer/transactional/guides/how-to-use-mailchimps-transactional-messaging-mcp.md): Learn how to use Mailchimp's transactional messaging MCP to allow AI agents to interact with our transactional API - [Fundamentals](https://mailchimp.com/developer/transactional/docs/fundamentals.md): Learn the basics to start sending with Mailchimp Transactional. - [Authentication and Delivery](https://mailchimp.com/developer/transactional/docs/authentication-delivery.md): Learn how to configure your sending domain and monitor delivery responses. - [Outbound Email](https://mailchimp.com/developer/transactional/docs/outbound-email.md): Get to know the details of sending messages with Mailchimp Transactional. - [SMTP Integration](https://mailchimp.com/developer/transactional/docs/smtp-integration.md): Set up sending with SMTP and modify your messages with custom headers. - [Templates and Dynamic Content](https://mailchimp.com/developer/transactional/docs/templates-dynamic-content.md): Create reusable templates and inject dynamic data in your sends. - [Tags and Metadata](https://mailchimp.com/developer/transactional/docs/tags-metadata.md): Label your messages to segment sends, search activity, and compare stats. - [The Rules Engine](https://mailchimp.com/developer/transactional/docs/rules-engine.md): Change sending behavior based on conditional rules that you create. - [Subaccounts](https://mailchimp.com/developer/transactional/docs/subaccounts.md): Manage reputation, activity, reports, and quotas across different senders under a single account. - [Reputation and Rejections](https://mailchimp.com/developer/transactional/docs/reputation-rejections.md): Understand bounces, spam complaints, and other factors that determine account reputation. - [Activity and Reports](https://mailchimp.com/developer/transactional/docs/activity-reports.md): Review delivery and recipient behavior with Mailchimp Transactional\u2019s analytics tools. - [Webhooks](https://mailchimp.com/developer/transactional/docs/webhooks.md): Receive information about email events as they occur and respond in a way that you define. - [Transactional SMS](https://mailchimp.com/developer/transactional/docs/transactional-sms.md): Learn how to configure transactional sms ## API Docs - API Reference > Allowlist [Add email to allowlist](https://mailchimp.com/developer/transactional/api/allowlist/allowlists-add.md) - API Reference > Allowlist [List allowlist entries](https://mailchimp.com/developer/transactional/api/allowlist/allowlists-list.md) - API Reference > Allowlist [Remove email from allowlist](https://mailchimp.com/developer/transactional/api/allowlist/allowlists-delete.md) - API Reference > Exports [Get export job information](https://mailchimp.com/developer/transactional/api/exports/info.md) - API Reference > Exports [List export jobs](https://mailchimp.com/developer/transactional/api/exports/list.md) - API Reference > Exports [Export rejection blacklist](https://mailchimp.com/developer/transactional/api/exports/rejects.md) - API Reference > Exports [Export allowlist (legacy)](https://mailchimp.com/developer/transactional/api/exports/whitelist.md) - API Reference > Exports [Export rejection allowlist](https://mailchimp.com/developer/transactional/api/exports/allowlist.md) - API Reference > Exports [Export activity history](https://mailchimp.com/developer/transactional/api/exports/activity.md) - API Reference > Dedicated Ips [List dedicated IPs](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-list.md) - API Reference > Dedicated Ips [Get dedicated IP information](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-info.md) - API Reference > Dedicated Ips [Request dedicated IP provisioning](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-provision.md) - API Reference > Dedicated Ips [Start IP warmup process](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-start-warmup.md) - API Reference > Dedicated Ips [Cancel IP warmup process](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-cancel-warmup.md) - API Reference > Dedicated Ips [Move IP to different pool](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-set-pool.md) - API Reference > Dedicated Ips [Delete dedicated IP](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-delete.md) - API Reference > Dedicated Ips [List dedicated IP pools](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-list-pools.md) - API Reference > Dedicated Ips [Get pool information](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-pool-info.md) - API Reference > Dedicated Ips [Create dedicated IP pool](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-create-pool.md) - API Reference > Dedicated Ips [Delete dedicated IP pool](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-delete-pool.md) - API Reference > Dedicated Ips [Test custom DNS configuration](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-check-custom-dns.md) - API Reference > Dedicated Ips [Configure custom DNS for IP](https://mailchimp.com/developer/transactional/api/dedicated-ips/ips-set-custom-dns.md) - API Reference > Inbound [List inbound domains](https://mailchimp.com/developer/transactional/api/inbound/domains.md) - API Reference > Inbound [Add inbound domain](https://mailchimp.com/developer/transactional/api/inbound/add-domain.md) - API Reference > Inbound [Check domain settings](https://mailchimp.com/developer/transactional/api/inbound/check-domain.md) - API Reference > Inbound [Delete inbound domain](https://mailchimp.com/developer/transactional/api/inbound/delete-domain.md) - API Reference > Inbound [List routes](https://mailchimp.com/developer/transactional/api/inbound/routes.md) - API Reference > Inbound [Add route](https://mailchimp.com/developer/transactional/api/inbound/add-route.md) - API Reference > Inbound [Update mailbox route](https://mailchimp.com/developer/transactional/api/inbound/update-route.md) - API Reference > Inbound [Delete route](https://mailchimp.com/developer/transactional/api/inbound/delete-route.md) - API Reference > Inbound [Send mime document](https://mailchimp.com/developer/transactional/api/inbound/send-raw.md) - API Reference > Mailchimp Templates [Get template info](https://mailchimp.com/developer/transactional/api/mailchimp-templates/mctemplates-info.md) - API Reference > Mailchimp Templates [List templates](https://mailchimp.com/developer/transactional/api/mailchimp-templates/mctemplates-list.md) - API Reference > Mailchimp Templates [Render template](https://mailchimp.com/developer/transactional/api/mailchimp-templates/mctemplates-render.md) - API Reference > Mailchimp Templates [Get template time series](https://mailchimp.com/developer/transactional/api/mailchimp-templates/mctemplates-time-series.md) - API Reference > Messages [Send a message](https://mailchimp.com/developer/transactional/api/messages/send.md) - API Reference > Messages [Send using a template](https://mailchimp.com/developer/transactional/api/messages/send-template.md) - API Reference > Messages [Send using Mailchimp template](https://mailchimp.com/developer/transactional/api/messages/send-mc-template.md) - API Reference > Messages [Search recently sent messages](https://mailchimp.com/developer/transactional/api/messages/search.md) - API Reference > Messages [Search time series](https://mailchimp.com/developer/transactional/api/messages/search-time-series.md) - API Reference > Messages [Get message info](https://mailchimp.com/developer/transactional/api/messages/info.md) - API Reference > Messages [Get message content](https://mailchimp.com/developer/transactional/api/messages/content.md) - API Reference > Messages [Parse a MIME message](https://mailchimp.com/developer/transactional/api/messages/parse.md) - API Reference > Messages [Send a raw message](https://mailchimp.com/developer/transactional/api/messages/send-raw.md) - API Reference > Messages [Get scheduled emails](https://mailchimp.com/developer/transactional/api/messages/list-scheduled.md) - API Reference > Messages [Cancel a scheduled email](https://mailchimp.com/developer/transactional/api/messages/cancel-scheduled.md) - API Reference > Messages [Reschedule a scheduled email](https://mailchimp.com/developer/transactional/api/messages/reschedule.md) - API Reference > Messages [Send SMS message](https://mailchimp.com/developer/transactional/api/messages/send-sms.md) - API Reference > Metadata [List custom metadata fields](https://mailchimp.com/developer/transactional/api/metadata/list.md) - API Reference > Metadata [Add custom metadata field](https://mailchimp.com/developer/transactional/api/metadata/add.md) - API Reference > Metadata [Update custom metadata field](https://mailchimp.com/developer/transactional/api/metadata/update.md) - API Reference > Metadata [Delete custom metadata field](https://mailchimp.com/developer/transactional/api/metadata/delete.md) - API Reference > Rejects [Add email to rejection blacklist](https://mailchimp.com/developer/transactional/api/rejects/add.md) - API Reference > Rejects [Add SMS to denylist](https://mailchimp.com/developer/transactional/api/rejects/add-sms.md) - API Reference > Rejects [List rejection blacklist entries](https://mailchimp.com/developer/transactional/api/rejects/list.md) - API Reference > Rejects [List SMS denylist](https://mailchimp.com/developer/transactional/api/rejects/list-sms.md) - API Reference > Rejects [Remove from blacklist](https://mailchimp.com/developer/transactional/api/rejects/delete.md) - API Reference > Rejects [Remove SMS from denylist](https://mailchimp.com/developer/transactional/api/rejects/delete-sms.md) - API Reference > Senders [List senders used by this account](https://mailchimp.com/developer/transactional/api/senders/list.md) - API Reference > Senders [List sender domains](https://mailchimp.com/developer/transactional/api/senders/domains.md) - API Reference > Senders [Add a sender domain](https://mailchimp.com/developer/transactional/api/senders/add-domain.md) - API Reference > Senders [Check domain SPF and DKIM](https://mailchimp.com/developer/transactional/api/senders/check-domain.md) - API Reference > Senders [Verify a sender domain by email](https://mailchimp.com/developer/transactional/api/senders/verify-domain.md) - API Reference > Senders [Get sender info](https://mailchimp.com/developer/transactional/api/senders/info.md) - API Reference > Senders [Get hourly stats for a sender](https://mailchimp.com/developer/transactional/api/senders/time-series.md) - API Reference > Senders [Delete a sender domain](https://mailchimp.com/developer/transactional/api/senders/delete-domain.md) - API Reference > Subaccounts [List subaccounts](https://mailchimp.com/developer/transactional/api/subaccounts/list.md) - API Reference > Subaccounts [Add a new subaccount](https://mailchimp.com/developer/transactional/api/subaccounts/add.md) - API Reference > Subaccounts [Get subaccount information](https://mailchimp.com/developer/transactional/api/subaccounts/info.md) - API Reference > Subaccounts [Update an existing subaccount](https://mailchimp.com/developer/transactional/api/subaccounts/update.md) - API Reference > Subaccounts [Delete a subaccount](https://mailchimp.com/developer/transactional/api/subaccounts/delete.md) - API Reference > Subaccounts [Pause a subaccount](https://mailchimp.com/developer/transactional/api/subaccounts/pause.md) - API Reference > Subaccounts [Resume a paused subaccount](https://mailchimp.com/developer/transactional/api/subaccounts/resume.md) - API Reference > Tags [List all user-defined tags](https://mailchimp.com/developer/transactional/api/tags/list.md) - API Reference > Tags [Delete a tag permanently](https://mailchimp.com/developer/transactional/api/tags/delete.md) - API Reference > Tags [Get tag info](https://mailchimp.com/developer/transactional/api/tags/info.md) - API Reference > Tags [Get tag time series](https://mailchimp.com/developer/transactional/api/tags/time-series.md) - API Reference > Tags [Get time series data for all tags](https://mailchimp.com/developer/transactional/api/tags/all-time-series.md) - API Reference > Templates [Add a new template](https://mailchimp.com/developer/transactional/api/templates/add.md) - API Reference > Templates [Get template information](https://mailchimp.com/developer/transactional/api/templates/info.md) - API Reference > Templates [Update an existing template](https://mailchimp.com/developer/transactional/api/templates/update.md) - API Reference > Templates [Publish a template](https://mailchimp.com/developer/transactional/api/templates/publish.md) - API Reference > Templates [Delete a template](https://mailchimp.com/developer/transactional/api/templates/delete.md) - API Reference > Templates [List all templates](https://mailchimp.com/developer/transactional/api/templates/list.md) - API Reference > Templates [Get template time series data](https://mailchimp.com/developer/transactional/api/templates/time-series.md) - API Reference > Templates [Render a template](https://mailchimp.com/developer/transactional/api/templates/render.md) - API Reference > Tracking Domains [Get tracking domains](https://mailchimp.com/developer/transactional/api/tracking-domains/urls-tracking-domains.md) - API Reference > Tracking Domains [Add tracking domain](https://mailchimp.com/developer/transactional/api/tracking-domains/urls-add-tracking-domain.md) - API Reference > Tracking Domains [Check tracking domain](https://mailchimp.com/developer/transactional/api/tracking-domains/urls-check-tracking-domain.md) - API Reference > Tracking Domains [Delete a tracking domain](https://mailchimp.com/developer/transactional/api/tracking-domains/urls-delete-tracking-domain.md) - API Reference > Users [Get account info](https://mailchimp.com/developer/transactional/api/users/info.md) - API Reference > Users [Ping](https://mailchimp.com/developer/transactional/api/users/ping.md) - API Reference > Users [Ping (strict JSON)](https://mailchimp.com/developer/transactional/api/users/ping-2.md) - API Reference > Users [List account senders](https://mailchimp.com/developer/transactional/api/users/senders.md) - API Reference > Webhooks [Get the list of all webhooks](https://mailchimp.com/developer/transactional/api/webhooks/list.md) - API Reference > Webhooks [Add a new webhook](https://mailchimp.com/developer/transactional/api/webhooks/add.md) - API Reference > Webhooks [Get webhook information](https://mailchimp.com/developer/transactional/api/webhooks/info.md) - API Reference > Webhooks [Update an existing webhook](https://mailchimp.com/developer/transactional/api/webhooks/update.md) - API Reference > Webhooks [Delete an existing webhook](https://mailchimp.com/developer/transactional/api/webhooks/delete.md) ## OpenAPI Specification The raw OpenAPI 3.1 specification for this API is available at: - [OpenAPI JSON](https://mailchimp.com/developer/transactional/openapi.json) - [OpenAPI YAML](https://mailchimp.com/developer/transactional/openapi.yaml) > **Note:** This page contains both a page directory (above) and the landing page content (below). The page directory is generated for agent use and does not appear on the landing page. > For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://mailchimp.com/developer/transactional/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://mailchimp.com/_mcp/server. # Essential email and SMS messages, delivered every time | Mailchimp Developer # Mailchimp Transactional ## Essential email and SMS messages, delivered every time Send targeted and event-driven messages to anyone, fast—with best-in-class deliverability. [View quick start](/developer/transactional/guides/quick-start)![Mailchimp Transactional](/developer/_fern-files/mailchimp.docs.buildwithfern.com/9daaf8bc0e5300d6c30716a4296a974bd496ce2ae0d799f088e8876b3fff3442/assets/Transactional_Emails_Hero.min.png) * ### Send transactional emails Deliver transactional emails at scale via the API or SMTP with Mailchimp’s speed and reliability. * [Send your first email](/developer/transactional/guides/send-first-email) Configure your DNS and start sending transactional email using Mailchimp Transactional Email (formerly known as Mandrill). * [Start sending with SMTP](/developer/transactional/docs/smtp-integration) Set up sending with SMTP and modify your messages with custom headers. * ### Send Transactional SMS Deliver critical SMS via the API and a phone number from Mailchimp’s SMS program. * [How to use Transactional SMS](/developer/transactional/docs/transactional-sms) Transactional SMS messages offer a direct and immediate way to communicate critical information to users. * [Send your first SMS](/developer/transactional/guides/send-first-sms) Set up your account, obtain a Sending Number, and use the API to start sending Transactional SMS messages. * ### Process inbound email & events Get real-time insights into your data and connect inbound email to your app with webhooks. * [Set up inbound email processing](/developer/transactional/guides/set-up-inbound-email-processing) Use Mailchimp Transactional to receive, process, and parse inbound email. * [Track and respond to email activity with webhooks](/developer/transactional/guides/track-respond-activity-webhooks) Respond to email events—like message opens and link clicks—using webhooks. * ### Analyze your data Track delivery rates, recipient engagement, and changes in your account reputation with our reporting tools. * [Review activity and reports](/developer/transactional/docs/activity-reports) Review delivery and recipient behavior with Mailchimp Transactional’s analytics tools. * [Change sending behavior with the Rules Engine](/developer/transactional/guides/change-behavior-rules-engine) Set up searchable criteria that trigger specific actions with your Mailchimp Transactional account. Join Mailchimp ## Transactional plans designed for developers Creating a new Mailchimp Transactional account is quick, easy, and a great way to get started. [Try for free\*](https://login.mailchimp.com/signup/?entrypoint=mandrill) [See pricing](https://mailchimp.com/pricing/transactional-email/) ![](/developer/_fern-files/mailchimp.docs.buildwithfern.com/05c1a9633045062fca2d95cce16f63f193cea4c2afce8d907cb7cc9bf8baea09/assets/Transactional_Emails_Spot.min.png)