--- title: "Connect Twilio to Customer.io - APIANT.ai" description: "When \"New Call\" fires in Twilio, your agent runs \"Send transactional email\" in Customer.io." canonical: "https://apiant.ai/connect/twilio-to-customer-io" --- # Connect Twilio to Customer.io When **New Call** fires in [Twilio](https://apiant.ai/connections/twilio), 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. Twilio **4** triggers Twilio **11** 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 Twilio 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 Twilio can start in Customer.io - When **New Call** in Twilio then **Send transactional email** in Customer.io - When **New Incoming Call** in Twilio 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 Twilio and Customer.io ## Triggers and actions 4 triggers · 21 actions - Trigger **New Call** Polls for voice calls on your Twilio account. - Trigger **New Incoming Call** Fires instantly when the selected Twilio phone number receives a call. - Trigger **New Message Received** Polls for inbound SMS/MMS messages received by your Twilio account. - Trigger **New SMS received** Fires instantly when the selected Twilio phone number receives an SMS/MMS. Activating the automation points the number's incoming-message webhook at this automation; deactivating clears it. - Action **Delete Message** Deletes a message from your Twilio account's message logs. - Action **Find available phone numbers by criteria** Returns up to 50 phone numbers available to buy in a country that match the specified criteria (area code, pattern, capabilities, location). - Action **Get Call** Retrieves details of a single voice call by its Call SID. - Action **Get Message** Retrieves a single SMS/MMS message by its Message SID. - Action **List Calls** Lists voice calls on the account, optionally filtered by To, From, or status. - Action **List Messages** Lists SMS/MMS messages on the account, optionally filtered by To, From, or date sent. - Action **List Phone Numbers** Lists the Twilio phone numbers (incoming phone numbers) owned by your account. - Action **Lookup Phone Number** Looks up details (carrier, line type, caller name) for a phone number via the Twilio Lookup v2 API. - Action **Schedule Message** Schedules an SMS or MMS message to be sent later through one of your Messaging Services. A scheduled message can be canceled with Update Message until it is sent. - Action **Update Message** Updates a Twilio Message: replaces or redacts its text, or cancels a scheduled message that has not been sent yet. - Action **Update Phone Number** Update settings (voice/SMS URLs, friendly name) of an owned incoming phone number. - 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 - [ **Twilio** Cloud communications platform for sending SMS/MMS messages, making and managing voice calls, and looking up...](https://apiant.ai/connections/twilio) - [ **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 Twilio - [ **Twilio to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/twilio-to-slack) - [ **Twilio to Zoom** Zoom unifies cloud video conferencing, simple online meetings, group messaging, and a software-based...](https://apiant.ai/connect/twilio-to-zoom) - [ **Twilio to Webflow** Webflow is a professional website builder and CMS for designing, building, and launching responsive...](https://apiant.ai/connect/twilio-to-webflow) - [ **Twilio to OpenAI** OpenAI's platform for text generation (Responses + Chat Completions), image generation (gpt-image-1 /...](https://apiant.ai/connect/twilio-to-openai) - [ **Twilio to Anthropic** Anthropic builds Claude, a family of large language models.](https://apiant.ai/connect/twilio-to-anthropic) - [ **Twilio to MySQL** Connect directly to a MySQL database and run SQL statements from your automations.](https://apiant.ai/connect/twilio-to-mysql) ## 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 ## Twilio and Customer.io, answered ### ### What can start an automation from Twilio? Any of Twilio's 4 triggers in the catalog, including New Call, New Incoming Call, New Message Received and New SMS received. 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 Twilio? 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 Twilio? Customer.io has no triggers in the catalog today, so automations start in Twilio. 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 Twilio 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 Twilio 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.