--- title: "Connect e-Boekhouden.nl to Lettermint - APIANT.ai" description: "When \"New Relation\" fires in e-Boekhouden.nl, your agent runs \"List projects\" in Lettermint." canonical: "https://apiant.ai/connect/e-boekhouden-nl-to-lettermint" --- # Connect e-Boekhouden.nl to Lettermint When **New Relation** fires in [e-Boekhouden.nl](https://apiant.ai/connections/e-boekhouden-nl), your agent runs **List projects** in [Lettermint](https://apiant.ai/connections/lettermint). Describe the whole flow and it is built, tested on every scenario and kept running. e-Boekhouden.nl **1** trigger e-Boekhouden.nl **7** actions Lettermint **8** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want e-Boekhouden.nl and Lettermint 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 e-Boekhouden.nl can start in Lettermint - When **New Relation** in e-Boekhouden.nl then **List projects** in Lettermint - When **New Relation** in e-Boekhouden.nl then **Add domain** in Lettermint 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 e-Boekhouden.nl and Lettermint ## Triggers and actions 1 trigger · 15 actions - Trigger **New Relation** Triggers when a new relation (customer or supplier) is added in e-Boekhouden.nl. - Action **Create Invoice** Creates a new sales invoice for a relation in e-Boekhouden.nl, optionally emailing it, marking it for direct debit, or booking it as a mutation. - Action **Create Ledger** Creates a new ledger account in your e-Boekhouden.nl administration. - Action **Create Mutation** Creates a mutation (bookkeeping entry) such as an invoice, payment, money received/sent or general journal entry. - Action **Create Relation** Creates a new relation (customer or supplier) in e-Boekhouden.nl and returns its id and code. - Action **Find Relation(s)** Returns the relations (customers and suppliers) matching the given code, name, email, contact, type or city. - Action **Get Ledger Balance** Returns the balance of a ledger account, optionally limited to a cost center or a date range. - Action **Update Relation** Updates an existing relation (customer or supplier) in e-Boekhouden.nl. Only the fields you fill in are changed; the name is always required. - Action **Add domain** Adds a new sending domain to your Lettermint team and returns the DNS records needed to verify it. - Action **Add suppression** Adds one email address, or up to 1,000 addresses, to the team, project or route suppression list so Lettermint stops sending to them. - Action **Delete domain** Deletes a sending domain from your Lettermint team. - Action **Delete suppression** Removes an email address from the team's suppression list so it can be mailed again. Spam complaint suppressions stay active while Lettermint reviews the removal. - Action **Get domain** Returns the details of a Lettermint sending domain, optionally including its DNS records and associated projects. - Action **List domains** Returns the sending domains on your Lettermint team, optionally filtered by project, status or name. - Action **List projects** Returns the projects in your Lettermint team, optionally filtered by a search term and sorted. - Action **List suppressions** Returns the suppressed email addresses and domains on your team, with their reason, scope and dates. ## Each app on its own - [ **e-Boekhouden.nl** e-Boekhouden.nl is a tool for freelancers, SMBs, accountants & bookkeepers for bookkeeping & invoicing online.](https://apiant.ai/connections/e-boekhouden-nl) - [ **Lettermint** Lettermint is an EU-based transactional email delivery service.](https://apiant.ai/connections/lettermint) Reviews ## What our customers say ## More from e-Boekhouden.nl - [ **e-Boekhouden.nl to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/e-boekhouden-nl-to-hubspot) - [ **e-Boekhouden.nl to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/e-boekhouden-nl-to-salesforce) - [ **e-Boekhouden.nl to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/e-boekhouden-nl-to-slack) - [ **e-Boekhouden.nl to Google Sheets** Google Sheets](https://apiant.ai/connect/e-boekhouden-nl-to-google-sheets) - [ **e-Boekhouden.nl to Gmail** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/e-boekhouden-nl-to-gmail) - [ **e-Boekhouden.nl to Google Calendar** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/e-boekhouden-nl-to-google-calendar) ## More into Lettermint - [ **HubSpot to Lettermint** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-lettermint) - [ **Salesforce to Lettermint** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-lettermint) - [ **Slack to Lettermint** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-lettermint) - [ **Google Sheets to Lettermint** Google Sheets](https://apiant.ai/connect/google-sheets-to-lettermint) - [ **Gmail to Lettermint** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-lettermint) - [ **Google Calendar to Lettermint** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-lettermint) Questions ## e-Boekhouden.nl and Lettermint, answered ### ### What can start an automation from e-Boekhouden.nl? Any of e-Boekhouden.nl's 1 trigger in the catalog, including New Relation. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Lettermint when something happens in e-Boekhouden.nl? Any of Lettermint's 8 actions, including Add domain, Add suppression, Get domain and List domains. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Lettermint to e-Boekhouden.nl? Lettermint has no triggers in the catalog today, so automations start in e-Boekhouden.nl. If you need the other direction, ask: your agent reads Lettermint's API documentation and adds it. ### ### Do I have to build a connector for e-Boekhouden.nl or Lettermint? 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 e-Boekhouden.nl and Lettermint 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.