--- title: "Connect MailerSend to OpenHolidays API - APIANT.ai" description: "When \"Email Is Clicked Through\" fires in MailerSend, your agent runs \"Find Public Holidays by Date\" in OpenHolidays API." canonical: "https://apiant.ai/connect/mailersend-to-openholidays-api" --- # Connect MailerSend to OpenHolidays API When **Email Is Clicked Through** fires in [MailerSend](https://apiant.ai/connections/mailersend), your agent runs **Find Public Holidays by Date** in [OpenHolidays API](https://apiant.ai/connections/openholidays-api). Describe the whole flow and it is built, tested on every scenario and kept running. MailerSend **11** triggers MailerSend **1** action OpenHolidays API **7** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want MailerSend and OpenHolidays API 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 MailerSend can start in OpenHolidays API - When **Email Is Clicked Through** in MailerSend then **Find Public Holidays by Date** in OpenHolidays API - When **Email Is Delivered** in MailerSend then **Find School Holidays by Date** in OpenHolidays API 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 MailerSend and OpenHolidays API ## Triggers and actions 11 triggers · 8 actions - Trigger **Email Is Clicked Through** Triggers when the recipient clicks on a link. - Trigger **Email Is Delivered** Triggers when an email is delivered. - Trigger **Email Is Hard Bounced** Triggers when an email is hard bounced. - Trigger **Email Is Opened** Triggers when an email is opened. - Trigger **Email Is Reported as Spam** Triggers when an email is reported as spam. - Trigger **Email Is Sent** Triggers when an email is sent. - Trigger **Email Is Soft Bounced** Triggers when an email is soft bounced. - Trigger **Recipient Has Unsubscribed** Triggers when a recipient unsubscribes from your mailing activity. - Trigger **SMS Delivery Failed** Triggers when SMS failed to deliver. - Trigger **SMS Is Delivered** Triggers when SMS is delivered. - Trigger **SMS Is Sent** Triggers when SMS is sent. - Action **Send an Email** Send an email via your MailerSend account. - Action **Find Public Holidays by Date** returns public holidays from ALL countries on a given date. - Action **Find School Holidays by Date** returns school holidays from ALL countries on a given date. - Action **List Countries** returns the list of all supported countries (isoCode + localized names). - Action **List Languages** returns the list of all languages used in the API's localized name fields. - Action **List Public Holidays** Returns the list of public holidays for a given country and date range (countryIsoCode, validFrom, validTo, languageIsoCode). - Action **List School Holidays** returns the list of official school holidays for a given country and date range (countryIsoCode, validFrom, validTo, languageIsoCode, subdivisionCode). - Action **List Subdivisions** returns the list of relevant subdivisions (states/regions) for a supported country, used as the subdivisionCode param on School Holidays calls. ## Each app on its own - [ **MailerSend** MailerSend is a powerful transactional email system built for developers but designed so non-tech teams can...](https://apiant.ai/connections/mailersend) - [ **OpenHolidays API** Public and school holidays for many countries via an open REST API](https://apiant.ai/connections/openholidays-api) Reviews ## What our customers say ## More from MailerSend - [ **MailerSend to Giphy** Giphy is the best way to search, share, and discover GIFs on the Internet.](https://apiant.ai/connect/mailersend-to-giphy) - [ **MailerSend to Poplar** Poplar is a web platform for programmatically print and mail.](https://apiant.ai/connect/mailersend-to-poplar) - [ **MailerSend to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/mailersend-to-salesforce) - [ **MailerSend to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/mailersend-to-slack) - [ **MailerSend to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/mailersend-to-stripe) - [ **MailerSend to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/mailersend-to-shopify) ## More into OpenHolidays API - [ **HubSpot to OpenHolidays API** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-openholidays-api) - [ **Salesforce to OpenHolidays API** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-openholidays-api) - [ **Slack to OpenHolidays API** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-openholidays-api) - [ **Google Sheets to OpenHolidays API** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-openholidays-api) - [ **Gmail to OpenHolidays API** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-openholidays-api) - [ **Google Calendar to OpenHolidays API** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-openholidays-api) Questions ## MailerSend and OpenHolidays API, answered ### ### What can start an automation from MailerSend? Any of MailerSend's 11 triggers in the catalog, including Email Is Clicked Through, Email Is Delivered, Email Is Hard Bounced and Email Is Opened. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in OpenHolidays API when something happens in MailerSend? Any of OpenHolidays API's 7 actions, including Find Public Holidays by Date, Find School Holidays by Date, List Countries and List Languages. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from OpenHolidays API to MailerSend? OpenHolidays API has no triggers in the catalog today, so automations start in MailerSend. If you need the other direction, ask: your agent reads OpenHolidays API's API documentation and adds it. ### ### Do I have to build a connector for MailerSend or OpenHolidays API? 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 MailerSend and OpenHolidays API 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.