--- title: "Open Letter Connect integrations and MCP server - APIANT.ai" description: "Connect Open Letter Connect to any other app, or use it from your AI client over MCP." canonical: "https://apiant.ai/connections/open-letter-connect" --- # Open Letter Connect integrations Connect Open Letter Connect to any other app, or use it from your AI client over MCP. Open Letter Connect allows you to seamlessly print and mail personalized postcards, letters, flyers, and real penned letters on demand. Connects with an API key [openletterconnect.com](https://openletterconnect.com/) **2** triggers **12** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want to automate with Open Letter Connect? 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) ### Grok Open grok.com/connectors, choose New Connector, then Custom, and paste the address. Grok signs you in in your browser. [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) Popular ## Open Letter Connect with the apps people pair it with most - [ **HubSpot to Open Letter Connect** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-open-letter-connect) - [ **Open Letter Connect to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/open-letter-connect-to-salesforce) - [ **Open Letter Connect to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/open-letter-connect-to-slack) - [ **Google Sheets to Open Letter Connect** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-open-letter-connect) - [ **Gmail to Open Letter Connect** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-open-letter-connect) - [ **Google Calendar to Open Letter Connect** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-open-letter-connect) - [ **Google Drive to Open Letter Connect** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-open-letter-connect) - [ **Mailchimp to Open Letter Connect** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailchimp-to-open-letter-connect) Pair it ## Connect Open Letter Connect with another app - [ **HubSpot to Open Letter Connect**](https://apiant.ai/connect/hubspot-to-open-letter-connect) - [ **Open Letter Connect to Salesforce**](https://apiant.ai/connect/open-letter-connect-to-salesforce) - [ **Open Letter Connect to Slack**](https://apiant.ai/connect/open-letter-connect-to-slack) - [ **Google Sheets to Open Letter Connect**](https://apiant.ai/connect/google-sheets-to-open-letter-connect) - [ **Gmail to Open Letter Connect**](https://apiant.ai/connect/gmail-to-open-letter-connect) - [ **Google Calendar to Open Letter Connect**](https://apiant.ai/connect/google-calendar-to-open-letter-connect) - [ **Google Drive to Open Letter Connect**](https://apiant.ai/connect/google-drive-to-open-letter-connect) - [ **Mailchimp to Open Letter Connect**](https://apiant.ai/connect/mailchimp-to-open-letter-connect) - [ **Open Letter Connect to Stripe**](https://apiant.ai/connect/open-letter-connect-to-stripe) - [ **Open Letter Connect to Shopify**](https://apiant.ai/connect/open-letter-connect-to-shopify) - [ **Open Letter Connect to QuickBooks Online**](https://apiant.ai/connect/open-letter-connect-to-quickbooks-online) - [ **Open Letter Connect to Pipedrive**](https://apiant.ai/connect/open-letter-connect-to-pipedrive) - [ **ActiveCampaign to Open Letter Connect**](https://apiant.ai/connect/activecampaign-to-open-letter-connect) - [ **Notion to Open Letter Connect**](https://apiant.ai/connect/notion-to-open-letter-connect) - [ **Airtable to Open Letter Connect**](https://apiant.ai/connect/airtable-to-open-letter-connect) - [ **Open Letter Connect to Trello**](https://apiant.ai/connect/open-letter-connect-to-trello) - [ **Asana to Open Letter Connect**](https://apiant.ai/connect/asana-to-open-letter-connect) - [ **JIRA to Open Letter Connect**](https://apiant.ai/connect/jira-to-open-letter-connect) - [ **ClickUp to Open Letter Connect**](https://apiant.ai/connect/clickup-to-open-letter-connect) - [ **Open Letter Connect to Zoom**](https://apiant.ai/connect/open-letter-connect-to-zoom) - [ **Discord to Open Letter Connect**](https://apiant.ai/connect/discord-to-open-letter-connect) - [ **Open Letter Connect to Twilio**](https://apiant.ai/connect/open-letter-connect-to-twilio) - [ **Open Letter Connect to SendGrid**](https://apiant.ai/connect/open-letter-connect-to-sendgrid) - [ **Open Letter Connect to Outlook**](https://apiant.ai/connect/open-letter-connect-to-outlook) - [ **Intercom to Open Letter Connect**](https://apiant.ai/connect/intercom-to-open-letter-connect) - [ **Freshdesk to Open Letter Connect**](https://apiant.ai/connect/freshdesk-to-open-letter-connect) - [ **Klaviyo to Open Letter Connect**](https://apiant.ai/connect/klaviyo-to-open-letter-connect) - [ **Brevo to Open Letter Connect**](https://apiant.ai/connect/brevo-to-open-letter-connect) - [ **Open Letter Connect to Typeform**](https://apiant.ai/connect/open-letter-connect-to-typeform) - [ **JotForm to Open Letter Connect**](https://apiant.ai/connect/jotform-to-open-letter-connect) - [ **Calendly to Open Letter Connect**](https://apiant.ai/connect/calendly-to-open-letter-connect) - [ **Open Letter Connect to PandaDoc**](https://apiant.ai/connect/open-letter-connect-to-pandadoc) - [ **Open Letter Connect to Webflow**](https://apiant.ai/connect/open-letter-connect-to-webflow) - [ **Open Letter Connect to Wix**](https://apiant.ai/connect/open-letter-connect-to-wix) - [ **Open Letter Connect to LinkedIn**](https://apiant.ai/connect/open-letter-connect-to-linkedin) - [ **Open Letter Connect to Facebook**](https://apiant.ai/connect/open-letter-connect-to-facebook) - [ **Instagram to Open Letter Connect**](https://apiant.ai/connect/instagram-to-open-letter-connect) - [ **Open Letter Connect to OpenAI**](https://apiant.ai/connect/open-letter-connect-to-openai) - [ **Open Letter Connect to Anthropic**](https://apiant.ai/connect/open-letter-connect-to-anthropic) - [ **OneDrive to Open Letter Connect**](https://apiant.ai/connect/onedrive-to-open-letter-connect) - [ **Google Docs to Open Letter Connect**](https://apiant.ai/connect/google-docs-to-open-letter-connect) - [ **Ontraport to Open Letter Connect**](https://apiant.ai/connect/ontraport-to-open-letter-connect) - [ **Freshworks CRM to Open Letter Connect**](https://apiant.ai/connect/freshworks-crm-to-open-letter-connect) - [ **GoHighLevel to Open Letter Connect**](https://apiant.ai/connect/gohighlevel-to-open-letter-connect) - [ **Capsule CRM to Open Letter Connect**](https://apiant.ai/connect/capsule-crm-to-open-letter-connect) - [ **Copper to Open Letter Connect**](https://apiant.ai/connect/copper-to-open-letter-connect) - [ **Open Letter Connect to Streak**](https://apiant.ai/connect/open-letter-connect-to-streak) - [ **NetHunt CRM to Open Letter Connect**](https://apiant.ai/connect/nethunt-crm-to-open-letter-connect) - [ **MINDBODY to Open Letter Connect**](https://apiant.ai/connect/mindbody-to-open-letter-connect) - [ **Open Letter Connect to Supabase**](https://apiant.ai/connect/open-letter-connect-to-supabase) - [ **Open Letter Connect to PostgreSQL**](https://apiant.ai/connect/open-letter-connect-to-postgresql) - [ **MySQL to Open Letter Connect**](https://apiant.ai/connect/mysql-to-open-letter-connect) - [ **Open Letter Connect to Vercel**](https://apiant.ai/connect/open-letter-connect-to-vercel) - [ **Open Letter Connect to ElevenLabs**](https://apiant.ai/connect/open-letter-connect-to-elevenlabs) - [ **Open Letter Connect to PagerDuty**](https://apiant.ai/connect/open-letter-connect-to-pagerduty) - [ **Open Letter Connect to Pushover**](https://apiant.ai/connect/open-letter-connect-to-pushover) - [ **Gravity Forms to Open Letter Connect**](https://apiant.ai/connect/gravity-forms-to-open-letter-connect) - [ **HubSpot Enterprise to Open Letter Connect**](https://apiant.ai/connect/hubspot-enterprise-to-open-letter-connect) - [ **Google Forms to Open Letter Connect**](https://apiant.ai/connect/google-forms-to-open-letter-connect) - [ **Facebook Lead Ads to Open Letter Connect**](https://apiant.ai/connect/facebook-lead-ads-to-open-letter-connect) What your agent can do with Open Letter Connect ## Triggers and actions 2 triggers · 12 actions - Trigger **New Contact** Triggers when a new contact is added in Open Letter Connect. - Trigger **New Order** Triggers when a new mail order is placed in Open Letter Connect. - Action **Add contact labels** Adds one or more labels (tags) to the given contacts. The update runs in the background. - Action **Cancel Order** Cancels an Open Letter Connect order that has not been mailed yet. - Action **Create Contact** Creates a contact in Open Letter Connect with a US mailing address. Either First Name or Company Name is required. - Action **Delete Contact** Deletes an Open Letter Connect contact. - Action **Find Contacts** Searches Open Letter Connect contacts by name, company, address, email or phone and returns the matches. - Action **Find Orders** Searches Open Letter Connect orders by order name or exact order ID. - Action **Get Contact** Returns one Open Letter Connect contact, including its labels. - Action **Get Order** Returns one Open Letter Connect order with its status, payment status and template. - Action **List contact labels** Returns all contact labels (tags) in your Open Letter Connect organization, with how many contacts carry each. - Action **List Templates** Lists your Open Letter Connect mail templates, optionally including the shared templates OLC provides. - Action **List tracking phone numbers** Returns the tracking phone numbers in your Open Letter Connect organization, optionally filtered by a search term. - Action **Update Contact** Updates an existing Open Letter Connect contact. Only the fields you fill in are changed. Reviews ## What our customers say Questions ## Open Letter Connect, answered ### ### Is there a Open Letter Connect MCP server? APIANT's MCP server at https://mcp.apiant.ai works with Open Letter Connect. Add that address to any AI client that takes a remote MCP server and sign in once in your browser. Your client can then run Open Letter Connect actions on demand, or have APIANT build, test and run automations that use Open Letter Connect. Nothing to install. ### ### What can start an automation from Open Letter Connect? Any of Open Letter Connect's 2 triggers in the catalog, including New Contact and New Order. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Open Letter Connect? Any of Open Letter Connect's 12 actions, including Create Contact, Update Contact, Add contact labels and Find Contacts. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can I use Open Letter Connect directly from Claude, ChatGPT or Cursor? Yes. Connect your AI client to APIANT once and it works with Open Letter Connect two ways. Ask it to do something in Open Letter Connect 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 on its own. A one-off action uses your plan's tasks the same way an automation step does. ### ### Do I need to write code against the Open Letter Connect API? No. APIANT connects to the Open Letter Connect API for you, with your Open Letter Connect API key. Describe what you want in plain language and your agent builds it on the Open Letter Connect triggers and actions in the catalog. If you need an endpoint that is not there yet, your agent reads the Open Letter Connect API documentation and adds it. ### ### Which apps can Open Letter Connect connect to? Any app in the catalog; the list on this page pairs Open Letter Connect with each of them. If the other app is missing, point your agent at its API documentation and it builds the connector. ### ### 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.