--- title: "Connect Mailosaur to Postal Methods - APIANT.ai" description: "When \"New message\" fires in Mailosaur, your agent runs \"Send a Letter With Address\" in Postal Methods." canonical: "https://apiant.ai/connect/mailosaur-to-postal-methods" --- # Connect Mailosaur to Postal Methods When **New message** fires in [Mailosaur](https://apiant.ai/connections/mailosaur), your agent runs **Send a Letter With Address** in [Postal Methods](https://apiant.ai/connections/postal-methods). Describe the whole flow and it is built, tested on every scenario and kept running. Mailosaur **1** trigger Mailosaur **10** actions Postal Methods **2** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Mailosaur and Postal Methods 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 Mailosaur can start in Postal Methods - When **New message** in Mailosaur then **Send a Letter With Address** in Postal Methods - When **New message** in Mailosaur then **Get a Letter** in Postal Methods 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 Mailosaur and Postal Methods ## Triggers and actions 1 trigger · 12 actions - Trigger **New message** Fires when a new email/SMS arrives in a server. - Action **Add server** Create a server (inbox). - Action **Delete message** Delete a message. - Action **Delete server** Delete a server. - Action **Find messages by criteria** Search messages by sentFrom/sentTo/subject/body. - Action **Get message** Retrieve one email/SMS message. - Action **Get server** Retrieve a server. - Action **List messages** List messages in a server. - Action **List servers** List servers (inboxes). - Action **Send email** Send an email. - Action **Update server** Update a server. - Action **Get a Letter** Returns the details of a letter you sent through Postal Methods, including its processing status, price and page count. - Action **Send a Letter With Address** Prints and mails a letter through Postal Methods, placing the recipient address you supply onto the document. Returns the new letter's id, processing status and the validated addresses. ## Each app on its own - [ **Mailosaur** Email and SMS testing API with disposable inboxes for automating OTP, MFA, and email workflow tests.](https://apiant.ai/connections/mailosaur) - [ **Postal Methods** Postal Methods offers the opportunity for simple, affordable mail services.](https://apiant.ai/connections/postal-methods) Reviews ## What our customers say ## More from Mailosaur - [ **Mailosaur to Valorant (non-official)** Valorant-API is an unofficial catalog of Valorant in-game assets and metadata.](https://apiant.ai/connect/mailosaur-to-valorant-non-official) - [ **Mailosaur to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/mailosaur-to-salesforce) - [ **Mailosaur to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/mailosaur-to-slack) - [ **Mailosaur to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/mailosaur-to-stripe) - [ **Mailosaur to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/mailosaur-to-shopify) - [ **Mailosaur to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/mailosaur-to-quickbooks-online) ## More into Postal Methods - [ **HubSpot to Postal Methods** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-postal-methods) - [ **Salesforce to Postal Methods** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-postal-methods) - [ **Slack to Postal Methods** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-postal-methods) - [ **Google Sheets to Postal Methods** Google Sheets](https://apiant.ai/connect/google-sheets-to-postal-methods) - [ **Gmail to Postal Methods** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-postal-methods) - [ **Google Calendar to Postal Methods** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-postal-methods) Questions ## Mailosaur and Postal Methods, answered ### ### What can start an automation from Mailosaur? Any of Mailosaur's 1 trigger in the catalog, including New message. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Postal Methods when something happens in Mailosaur? Any of Postal Methods's 2 actions, including Send a Letter With Address and Get a Letter. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Postal Methods to Mailosaur? Postal Methods has no triggers in the catalog today, so automations start in Mailosaur. If you need the other direction, ask: your agent reads Postal Methods's API documentation and adds it. ### ### Do I have to build a connector for Mailosaur or Postal Methods? 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 Mailosaur and Postal Methods 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.