--- title: "Connect Moosend and PostStack - APIANT.ai" description: "When \"New Subscriber\" fires in Moosend, your agent runs \"Add a contact\" in PostStack." canonical: "https://apiant.ai/connect/moosend-to-poststack" --- # Connect Moosend and PostStack When **New Subscriber** fires in [Moosend](https://apiant.ai/connections/moosend), your agent runs **Add a contact** in [PostStack](https://apiant.ai/connections/poststack), or **Contact Updated (instant)** in PostStack to **Find Subscriber by Email** in Moosend. Describe the whole flow and it is built, tested on every scenario and kept running. Moosend **3** triggers Moosend **8** actions PostStack **7** triggers PostStack **31** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Moosend and PostStack 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 Moosend and PostStack can do together ### From Moosend to PostStack - When **New Subscriber** in Moosend then **Add a contact** in PostStack - When **New Unsubscriber** in Moosend then **Add contacts to segment** in PostStack ### From PostStack to Moosend - When **Contact Updated (instant)** in PostStack then **Find Subscriber by Email** in Moosend - When **New Contact (instant)** in PostStack then **Create Mailing List** in Moosend 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 Moosend and PostStack ## Triggers and actions 10 triggers · 39 actions - Trigger **New Subscriber** Triggers when a new subscriber is added to a Moosend mailing list. - Trigger **New Unsubscriber** Triggers when a subscriber unsubscribes from a Moosend mailing list. - Trigger **Updated Profile** Triggers when a subscriber in a Moosend mailing list is added or their profile is updated. - Action **Create Mailing List** Creates a new mailing list in Moosend and returns its ID. - Action **Find Subscriber by Email** Finds a subscriber in a Moosend mailing list by email address. - Action **Get Mailing List** Returns the details of one Moosend mailing list. - Action **Get Subscriber** Returns a subscriber in a Moosend mailing list by its ID. - Action **List Mailing Lists** Returns all active mailing lists in the Moosend account. - Action **Remove Subscriber** Removes a subscriber from a Moosend mailing list. - Action **Set Custom Field Value** Sets one custom field value on a subscriber in a Moosend mailing list. - Action **Unsubscribe Member** Unsubscribes a member from one Moosend mailing list, or from all mailing lists when no list is given. - Trigger **Contact Deleted (instant)** Fires when a contact is deleted (event: contact.deleted). - Trigger **Contact Updated (instant)** Fires when a contact is updated (event: contact.updated). - Trigger **Email Bounced (instant)** Fires when an email bounces (event: email.bounced). - Trigger **Email Delivered (instant)** Fires when an email is delivered (event: email.delivered). - Trigger **New Contact (instant)** Fires when a contact is created (event: contact.created). - Trigger **New Inbound Email** Polls for newly received inbound emails. - Trigger **New Sent Email (instant)** Fires when an email is sent (event: email.sent). - Action **Add a broadcast** Create a new marketing broadcast. - Action **Add a contact** Create a new contact. - Action **Add a segment** Create a new manual contact segment. - Action **Add a template** Create a new email template. - Action **Add contacts to segment** Add contacts to an existing segment. - Action **Add suppression** Add an address to the suppression list. - Action **Cancel broadcast** Cancel an in-flight broadcast. - Action **Cancel email** Cancel a scheduled or queued email before it sends. - Action **Delete a contact** Delete a contact. - Action **Delete a template** Delete an email template. - Action **Get a contact** Fetch one contact by ID. - Action **Get a template** Fetch one email template by ID. - Action **Get broadcast** Retrieve one broadcast by its public id, including the HTML and text bodies that the list endpoint omits. - Action **Get email** Fetch one sent or queued email by ID. - Action **Get email events** Get the delivery event timeline for one email. - Action **Get inbound email** Fetch one received inbound email by ID. - Action **Import contacts** Bulk-import a CSV list of contacts. - Action **List broadcasts** List marketing broadcasts. - Action **List contacts** List contacts in the account. - Action **List emails** List sent, queued, and scheduled emails. - Action **List inbound emails** List emails received via inbound parsing. - Action **List segments** List contact segments. - Action **List suppressed addresses** List addresses on the suppression list. - Action **List templates** List email templates. - Action **Send an email** Send a transactional email through PostStack. - Action **Send broadcast** Start sending a broadcast to its recipients. - Action **Send emails in batch** Send up to 100 emails in a single request. - Action **Update a contact** Update an existing contact's fields. - Action **Update a template** Update an email template, creating a new version. - Action **Update email** Reschedule a queued email's send time. - Action **Validate email address** Check whether an email address is valid and deliverable. ## Each app on its own - [ **Moosend** Moosend is an email marketing & automations platform that helps you ease the burden of sending your email...](https://apiant.ai/connections/moosend) - [ **PostStack** EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics](https://apiant.ai/connections/poststack) Reviews ## What our customers say ## More from Moosend - [ **Moosend to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/moosend-to-salesforce) - [ **Moosend to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/moosend-to-slack) - [ **Moosend to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/moosend-to-stripe) - [ **Moosend to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/moosend-to-shopify) - [ **Moosend to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/moosend-to-quickbooks-online) - [ **Moosend to Pipedrive** Pipedrive is a sales CRM and pipeline management tool.](https://apiant.ai/connect/moosend-to-pipedrive) ## More into PostStack - [ **HubSpot to PostStack** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-poststack) - [ **Google Sheets to PostStack** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-poststack) - [ **Gmail to PostStack** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-poststack) - [ **Google Calendar to PostStack** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-poststack) - [ **Google Drive to PostStack** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-poststack) - [ **Mailchimp to PostStack** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailchimp-to-poststack) Questions ## Moosend and PostStack, answered ### ### What can start an automation from Moosend? Any of Moosend's 3 triggers in the catalog, including New Subscriber, New Unsubscriber and Updated Profile. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in PostStack when something happens in Moosend? Any of PostStack's 31 actions, including Send an email, Send broadcast, Send emails in batch and Update a contact. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from PostStack to Moosend? Yes. When something happens in PostStack, your agent can act in Moosend too. This page covers both directions: PostStack's triggers and Moosend's actions are listed here as well. ### ### Do I have to build a connector for Moosend or PostStack? 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 Moosend and PostStack 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.