--- title: "Connect Cassidy to Mailrelay - APIANT.ai" description: "When \"Workflow Finished Running\" fires in Cassidy, your agent runs \"Add campaign\" in Mailrelay." canonical: "https://apiant.ai/connect/cassidy-to-mailrelay" --- # Connect Cassidy to Mailrelay When **Workflow Finished Running** fires in [Cassidy](https://apiant.ai/connections/cassidy), your agent runs **Add campaign** in [Mailrelay](https://apiant.ai/connections/mailrelay). Describe the whole flow and it is built, tested on every scenario and kept running. Cassidy **1** trigger Mailrelay **1** trigger Mailrelay **11** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Cassidy and Mailrelay 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 Cassidy can start in Mailrelay - When **Workflow Finished Running** in Cassidy then **Add campaign** in Mailrelay - When **Workflow Finished Running** in Cassidy then **Add group** in Mailrelay 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 Cassidy and Mailrelay ## Triggers and actions 2 triggers · 11 actions - Trigger **Workflow Finished Running** Triggers when a Workflow finishes running within Cassidy. - Trigger **New subscriber** Polling trigger for newly created subscribers. - Action **Add campaign** Create a campaign. - Action **Add group** Create a group. - Action **Add subscriber** Create a subscriber. - Action **Delete subscriber** Remove a subscriber. - Action **Find subscribers by criteria** Search subscribers using q[field_predicate] filters. - Action **Get campaign** Get a campaign by id. - Action **Get subscriber** Get a subscriber by id. - Action **List campaigns** List campaigns. - Action **List groups** List groups. - Action **List senders** List senders. - Action **Update subscriber** Update a subscriber. ## Each app on its own - [ **Cassidy** Cassidy securely connects with all of your existing tools, builds AI assistants and creates AI-driven...](https://apiant.ai/connections/cassidy) - [ **Mailrelay** Mailrelay is an advanced email marketing platform with powerful features.](https://apiant.ai/connections/mailrelay) Reviews ## What our customers say ## More from Cassidy - [ **Cassidy to Agify** API that estimates a person's likely age from their first name, with optional country-based scoping.](https://apiant.ai/connect/cassidy-to-agify) - [ **Cassidy to Inistate** Inistate is simplifying processes to best-fit sustainable and scalable solutions and reinventing no-code...](https://apiant.ai/connect/cassidy-to-inistate) - [ **Cassidy to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/cassidy-to-hubspot) - [ **Cassidy to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/cassidy-to-salesforce) - [ **Cassidy to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/cassidy-to-slack) - [ **Cassidy to Google Sheets** Google Sheets](https://apiant.ai/connect/cassidy-to-google-sheets) ## More into Mailrelay - [ **CustomGPT.ai to Mailrelay** CustomGPT.ai is a no-code platform that lets you build AI chatbots using your own business content, designed...](https://apiant.ai/connect/customgpt-ai-to-mailrelay) - [ **HubSpot to Mailrelay** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-mailrelay) - [ **Google Sheets to Mailrelay** Google Sheets](https://apiant.ai/connect/google-sheets-to-mailrelay) - [ **Gmail to Mailrelay** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-mailrelay) - [ **Google Calendar to Mailrelay** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-mailrelay) - [ **Google Drive to Mailrelay** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-mailrelay) Questions ## Cassidy and Mailrelay, answered ### ### What can start an automation from Cassidy? Any of Cassidy's 1 trigger in the catalog, including Workflow Finished Running. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Mailrelay when something happens in Cassidy? Any of Mailrelay's 11 actions, including Update subscriber, Add campaign, Add group and Add subscriber. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Mailrelay to Cassidy? Mailrelay has no triggers in the catalog today, so automations start in Cassidy. If you need the other direction, ask: your agent reads Mailrelay's API documentation and adds it. ### ### Do I have to build a connector for Cassidy or Mailrelay? 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 Cassidy and Mailrelay without building an automation? Yes. With your AI client connected to APIANT, ask it to do something in Mailrelay 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.