--- title: "Connect Handwrytten to Customer.io - APIANT.ai" description: "When \"Address List\" fires in Handwrytten, your agent runs \"Send transactional email\" in Customer.io." canonical: "https://apiant.ai/connect/handwrytten-to-customer-io" --- # Connect Handwrytten to Customer.io When **Address List** fires in [Handwrytten](https://apiant.ai/connections/handwrytten), your agent runs **Send transactional email** in [Customer.io](https://apiant.ai/connections/customer-io). Describe the whole flow and it is built, tested on every scenario and kept running. Handwrytten **1** trigger Handwrytten **7** actions Customer.io **10** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Handwrytten and Customer.io 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 Handwrytten can start in Customer.io - When **Address List** in Handwrytten then **Send transactional email** in Customer.io - When **Address List** in Handwrytten then **Create Anonymous Event** in Customer.io 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 Handwrytten and Customer.io ## Triggers and actions 1 trigger · 17 actions - Trigger **Address List** Triggers when Recipient Addresses are needed. - Action **Add Order to Basket** Adds an order to a basket. If sending multiple cards at once, use this for each order, then check-out with Send Basket - Action **Create Contact** Creates a new address book entry for the Handwrytten address book. (Note: other zaps don't really use the address book, but the rest of Handwrytten does.). - Action **Create Custom Card** Creates a new custom 5x7 card with full bleed cover, using specified images, fonts, and logos. - Action **Empty Basket** Clears your basket. - Action **Find Contact** Finds a contact in your address book. - Action **Update Contact** Updates an entry in the Handwrytten address book. - Action **Upload Custom Image** Adds an image to Handwrytten for use in custom card designs. - Action **Create Anonymous Event** Records an event that isn't tied to a known person yet, such as a page view or an action by a visitor. Include an anonymous id to link the event to a person later. - Action **Create Event** Records an event for a person in Customer.io, which can trigger campaigns or update segments. - Action **Delete person** Deletes a person from your Customer.io workspace, identified by their id, email address or Customer.io id. - Action **Get person** Look up a customer's attributes by customer_id. - Action **List segments** List all manual and data-driven segments in the workspace. - Action **Merge people** Merges a duplicate person into a primary person. The secondary person's attributes and activity move to the primary person, and the secondary person is deleted. - Action **Remove people from segment** Removes people from a manual segment in Customer.io. Data-driven segments can't be changed this way. - Action **Send API-triggered broadcast** Trigger an API-triggered broadcast campaign to send immediately. - Action **Send transactional email** Send a one-off transactional email via a transactional message template. - Action **Suppress person** Deletes a person from your Customer.io workspace and suppresses their identifiers so nobody can be added again with the same id, email or phone. Activity attributed to them is redacted. ## Each app on its own - [ **Handwrytten** Handwrytten is a way to automatically send real cards and notes written in pen and ink.](https://apiant.ai/connections/handwrytten) - [ **Customer.io** With Customer.io you can send email, SMS, and push based on what people do or don't do in your app.](https://apiant.ai/connections/customer-io) Reviews ## What our customers say ## More from Handwrytten - [ **Handwrytten to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/handwrytten-to-hubspot) - [ **Handwrytten to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/handwrytten-to-salesforce) - [ **Handwrytten to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/handwrytten-to-slack) - [ **Handwrytten to Mailchimp** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/handwrytten-to-mailchimp) - [ **Handwrytten to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/handwrytten-to-stripe) - [ **Handwrytten to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/handwrytten-to-shopify) ## More into Customer.io - [ **HubSpot to Customer.io** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-customer-io) - [ **Wistia to Customer.io** Wistia makes it easy to host, track, and measure video engagement online.](https://apiant.ai/connect/wistia-to-customer-io) - [ **Salesforce to Customer.io** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-customer-io) - [ **Slack to Customer.io** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-customer-io) - [ **Google Sheets to Customer.io** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-customer-io) - [ **Gmail to Customer.io** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-customer-io) Questions ## Handwrytten and Customer.io, answered ### ### What can start an automation from Handwrytten? Any of Handwrytten's 1 trigger in the catalog, including Address List. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Customer.io when something happens in Handwrytten? Any of Customer.io's 10 actions, including Create Anonymous Event, Create Event, Send API-triggered broadcast and Send transactional email. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Customer.io to Handwrytten? Customer.io has no triggers in the catalog today, so automations start in Handwrytten. If you need the other direction, ask: your agent reads Customer.io's API documentation and adds it. ### ### Do I have to build a connector for Handwrytten or Customer.io? 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 Handwrytten and Customer.io without building an automation? Yes. With your AI client connected to APIANT, ask it to do something in either app 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.