--- title: "Connect Erpnext and PostStack - APIANT.ai" description: "When \"New Customer\" fires in Erpnext, your agent runs \"Add a contact\" in PostStack, or \"Contact Updated (instant)\" in PostStack to \"Add Contact\" in Erpnext." canonical: "https://apiant.ai/connect/erpnext-to-poststack" --- # Connect Erpnext and PostStack When **New Customer** fires in [Erpnext](https://apiant.ai/connections/erpnext), your agent runs **Add a contact** in [PostStack](https://apiant.ai/connections/poststack), or **Contact Updated (instant)** in PostStack to **Add Contact** in Erpnext. Describe the whole flow and it is built, tested on every scenario and kept running. Erpnext **2** triggers Erpnext **30** 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 Erpnext 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 Erpnext and PostStack can do together ### From Erpnext to PostStack - When **New Customer** in Erpnext then **Add a contact** in PostStack - When **New Sales Invoice** in Erpnext then **Add contacts to segment** in PostStack ### From PostStack to Erpnext - When **Contact Updated (instant)** in PostStack then **Add Contact** in Erpnext - When **New Contact (instant)** in PostStack then **Update Contact** in Erpnext 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 Erpnext and PostStack ## Triggers and actions 9 triggers · 61 actions - Trigger **New Customer** Fires when a new customer is created. - Trigger **New Sales Invoice** Fires when a new sales invoice is created. - Action **Add Contact** Create a new contact. - Action **Add Customer** Create a new customer record. - Action **Add Item** Create a new item (product/service) record. - Action **Add Lead** Create a new lead. - Action **Add Sales Invoice** Create a new sales invoice. - Action **Add Sales Order** Create a new sales order. - Action **Delete Contact** Delete a contact record. - Action **Delete Customer** Delete a customer record. - Action **Delete Item** Delete an item record. - Action **Delete Lead** Delete a lead record. - Action **Delete Sales Invoice** Delete a sales invoice record. - Action **Delete Sales Order** Delete a sales order record. - Action **Get Contact** Retrieve a single contact by name/id. - Action **Get Customer** Retrieve a single customer by name/id. - Action **Get Item** Retrieve a single item by name/id. - Action **Get Lead** Retrieve a single lead by name/id. - Action **Get Sales Invoice** Retrieve a single sales invoice by name/id. - Action **Get Sales Order** Retrieve a single sales order by name/id. - Action **List Contacts** List contact records with optional filters. - Action **List Customers** List customer records with optional filters. - Action **List Items** List item records with optional filters. - Action **List Leads** List lead records with optional filters. - Action **List Sales Invoices** List sales invoice records with optional filters. - Action **List Sales Orders** List sales order records with optional filters. - Action **Update Contact** Update fields on an existing contact. - Action **Update Customer** Update fields on an existing customer. - Action **Update Item** Update fields on an existing item. - Action **Update Lead** Update fields on an existing lead. - Action **Update Sales Invoice** Update fields on an existing sales invoice. - Action **Update Sales Order** Update fields on an existing sales order. - 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 - [ **Erpnext** Open-source ERP system for accounting, inventory, manufacturing, sales, projects, and CRM.](https://apiant.ai/connections/erpnext) - [ **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 Erpnext - [ **Erpnext to Pipedrive** Pipedrive is a sales CRM and pipeline management tool.](https://apiant.ai/connect/erpnext-to-pipedrive) - [ **Erpnext to PandaDoc** PandaDoc helps you build and deliver sales quotes and proposals and track presentations and close deals...](https://apiant.ai/connect/erpnext-to-pandadoc) - [ **Erpnext to Supabase** Supabase is an open-source backend-as-a-service providing a Postgres database, authentication, storage, and...](https://apiant.ai/connect/erpnext-to-supabase) - [ **Erpnext to Vercel** Vercel is a platform for building, deploying, and scaling fast, modern web applications effortlessly.](https://apiant.ai/connect/erpnext-to-vercel) - [ **Erpnext to FreeAgent** FreeAgent is cloud accounting software for small businesses and freelancers — manage contacts, invoices...](https://apiant.ai/connect/erpnext-to-freeagent) - [ **Erpnext to Google Chat** Google Chat is a communication software developed by Google built for teams that provides direct messages...](https://apiant.ai/connect/erpnext-to-google-chat) ## 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 ## Erpnext and PostStack, answered ### ### What can start an automation from Erpnext? Any of Erpnext's 2 triggers in the catalog, including New Customer and New Sales Invoice. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in PostStack when something happens in Erpnext? 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 Erpnext? Yes. When something happens in PostStack, your agent can act in Erpnext too. This page covers both directions: PostStack's triggers and Erpnext's actions are listed here as well. ### ### Do I have to build a connector for Erpnext 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 Erpnext 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.