--- title: "Connect Cal.com to Mailchimp Transactional (Mandrill) - APIANT.ai" description: "When \"Booking Created\" fires in Cal.com, your agent runs \"Send an email using a template\" in Mailchimp Transactional (Mandrill)." canonical: "https://apiant.ai/connect/cal-com-to-mailchimp-transactional-mandrill" --- # Connect Cal.com to Mailchimp Transactional (Mandrill) When **Booking Created** fires in [Cal.com](https://apiant.ai/connections/cal-com), your agent runs **Send an email using a template** in [Mailchimp Transactional (Mandrill)](https://apiant.ai/connections/mailchimp-transactional-mandrill). Describe the whole flow and it is built, tested on every scenario and kept running. Cal.com **5** triggers Mailchimp Transactional (Mandrill) **17** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Cal.com and Mailchimp Transactional (Mandrill) to do together? Give your AI client this address. `https://mcp.apiant.ai` One connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser. ### Set it up in your client ### Claude Code Run this in the directory you want to work in. `claude mcp add --transport http -s project apiant-ai https://mcp.apiant.ai` Start Claude Code there, approve the server, and sign in in the browser page it opens. [Claude Code guide (opens in a new tab)](https://apiant.ai/docs/mcp/claude-code) ### Claude, web and desktop Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Cursor Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Zed Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Codex and the ChatGPT desktop app Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Any other MCP client Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) Example flows ## What Cal.com can start in Mailchimp Transactional (Mandrill) - When **Booking Created** in Cal.com then **Send an email using a template** in Mailchimp Transactional (Mandrill) - When **Out of Office Created** in Cal.com then **Add reject (blacklist)** in Mailchimp Transactional (Mandrill) Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships. Everything your agent can do with Cal.com and Mailchimp Transactional (Mandrill) ## Triggers and actions 5 triggers · 17 actions - Trigger **Booking Cancelled** Triggers when a booking is cancelled. - Trigger **Booking Created** Triggers when a new booking is created. - Trigger **Booking Rescheduled** Triggers when a booking is rescheduled. - Trigger **Meeting Ended** Triggers after meeting ends. - Trigger **Out of Office Created** Triggers when a new Out Of Office entry is created. - Action **Add reject (blacklist)** Add an email to your email rejection blacklist. - Action **Add subaccount** Add a new subaccount. - Action **Add template** Add a new template to the account. - Action **Add to whitelist** Add an email to your email rejection whitelist. - Action **Delete from whitelist** Remove an email from your email rejection whitelist. - Action **Delete reject (blacklist)** Remove an email from your email rejection blacklist. - Action **Delete subaccount** Delete an existing subaccount; any messages queued for it are removed. - Action **Delete template** Delete a template from the account. - Action **Get account info** Return information about the API-connected user, including reputation, hourly quota, and usage stats. - Action **Get message info** Get the full information for a single recently sent message. - Action **Get sender info** Get more detailed information about a single sender, including stats for the past 30 days. - Action **Get subaccount info** Get information about a specific subaccount. - Action **Get tag info** Return more detailed information about a single tag, including aggregates of recent stats. - Action **Get template info** Get the information for a specific template. - Action **Ping (validate API key)** Validate an API key and respond to a ping. - Action **Send an email using a template** Send a transactional message using a stored Mandrill template. - Action **Update template** Update the code for an existing template. ## Each app on its own - [ **Cal.com** Cal.com simplifies scheduling for individuals, teams, and developers with powerful features and integrations...](https://apiant.ai/connections/cal-com) - [ **Mailchimp Transactional (Mandrill)** Mandrill is simple, powerful transactional email from the same people that brought you Mailchimp.](https://apiant.ai/connections/mailchimp-transactional-mandrill) Reviews ## What our customers say ## More from Cal.com - [ **Cal.com to Google Drive** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/cal-com-to-google-drive) - [ **Cal.com to Cloudflare Trace** Cloudflare Trace is a free JSON wrapper over Cloudflare's edge trace endpoint that reports what Cloudflare...](https://apiant.ai/connect/cal-com-to-cloudflare-trace) - [ **Cal.com to Odoo CRM** Odoo is a powerful open source platform with dozens of apps to help you grow your business.](https://apiant.ai/connect/cal-com-to-odoo-crm) - [ **Cal.com to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/cal-com-to-hubspot) - [ **Cal.com to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/cal-com-to-salesforce) - [ **Cal.com to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/cal-com-to-slack) ## More into Mailchimp Transactional (Mandrill) - [ **HubSpot to Mailchimp Transactional (Mandrill)** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-mailchimp-transactional-mandrill) - [ **Salesforce to Mailchimp Transactional (Mandrill)** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-mailchimp-transactional-mandrill) - [ **Slack to Mailchimp Transactional (Mandrill)** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-mailchimp-transactional-mandrill) - [ **Google Sheets to Mailchimp Transactional (Mandrill)** Google Sheets](https://apiant.ai/connect/google-sheets-to-mailchimp-transactional-mandrill) - [ **Gmail to Mailchimp Transactional (Mandrill)** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-mailchimp-transactional-mandrill) - [ **Google Calendar to Mailchimp Transactional (Mandrill)** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-mailchimp-transactional-mandrill) Questions ## Cal.com and Mailchimp Transactional (Mandrill), answered ### ### What can start an automation from Cal.com? Any of Cal.com's 5 triggers in the catalog, including Booking Created, Out of Office Created, Booking Rescheduled and Meeting Ended. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Mailchimp Transactional (Mandrill) when something happens in Cal.com? Any of Mailchimp Transactional (Mandrill)'s 17 actions, including Send an email using a template, Update template, Add reject (blacklist) and Add subaccount. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Mailchimp Transactional (Mandrill) to Cal.com? Mailchimp Transactional (Mandrill) has no triggers in the catalog today, so automations start in Cal.com. If you need the other direction, ask: your agent reads Mailchimp Transactional (Mandrill)'s API documentation and adds it. ### ### Do I have to build a connector for Cal.com or Mailchimp Transactional (Mandrill)? No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running. ### ### Can my AI client use Cal.com and Mailchimp Transactional (Mandrill) without building an automation? Yes. With your AI client connected to APIANT, ask it to do something in Mailchimp Transactional (Mandrill) once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both. ### ### What happens when something fails? Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships. ### ### Is there a free plan? Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.