# Connect EasyPost and PostStack When **New tracker update** fires in [EasyPost](https://apiant.ai/connections/easypost), your agent runs **Add a contact** in [PostStack](https://apiant.ai/connections/poststack), or **Contact Updated (instant)** in PostStack to **Add address** in EasyPost. Describe the whole flow and it is built, tested on every scenario and kept running. EasyPost **1** trigger EasyPost **11** 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 EasyPost 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 EasyPost and PostStack can do together ### From EasyPost to PostStack - When **New tracker update** in EasyPost then **Add a contact** in PostStack - When **New tracker update** in EasyPost then **Add contacts to segment** in PostStack ### From PostStack to EasyPost - When **Contact Updated (instant)** in PostStack then **Add address** in EasyPost - When **New Contact (instant)** in PostStack then **Add batch** in EasyPost 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 EasyPost and PostStack ## Triggers and actions 8 triggers · 42 actions - Trigger **New tracker update** Triggers when EasyPost reports a tracker was created or updated, such as a new scan or status change on a package. - Action **Add address** Creates an address (a person, place or organization) in EasyPost, optionally verifying it for deliverability. Returns the saved address with any verification results. - Action **Add batch** Creates a batch of shipments in EasyPost, so they can be bought, labelled, manifested or picked up together. A batch can also be created empty and shipments added later. - Action **Add pickup** Creates a pickup request for a purchased shipment and returns the available pickup rates, which must then be bought to schedule the pickup. - Action **Add refund** Requests refunds for one or more purchased shipping labels by carrier and tracking code, and returns the resulting refund records. - Action **Add shipment** Creates a shipment from a destination address, an origin address and a parcel, and returns the shipment with its available shipping rates. - Action **Add tracker** Creates a tracker for a package tracking code (for labels bought outside EasyPost) and returns its current tracking status and history. - Action **Buy shipment** Purchases a shipping label for an existing shipment using the selected rate, returning the tracking code and postage label. - Action **Get address** Returns an address saved in EasyPost by its ID, including its verification results. - Action **Get batch** Returns a batch of shipments, including its state, shipment statuses, consolidated label and scan form. - Action **Get pickup** Returns a scheduled carrier pickup, including its status, confirmation number, address and available pickup rates. - Action **Get shipment** Returns a shipment, including its addresses, parcel, rates, label and tracking details. - 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 - [ **EasyPost** EasyPost provides a simple postage API that allows developers to quickly and painlessly integrate shipping...](https://apiant.ai/connections/easypost) - [ **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 EasyPost - [ **EasyPost to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/easypost-to-hubspot) - [ **EasyPost to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/easypost-to-salesforce) - [ **EasyPost to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/easypost-to-slack) - [ **EasyPost to Google Sheets** Google Sheets](https://apiant.ai/connect/easypost-to-google-sheets) - [ **EasyPost to Gmail** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/easypost-to-gmail) - [ **EasyPost to Google Calendar** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/easypost-to-google-calendar) ## 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](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 ## EasyPost and PostStack, answered ### ### What can start an automation from EasyPost? Any of EasyPost's 1 trigger in the catalog, including New tracker update. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in PostStack when something happens in EasyPost? 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 EasyPost? Yes. When something happens in PostStack, your agent can act in EasyPost too. This page covers both directions: PostStack's triggers and EasyPost's actions are listed here as well. ### ### Do I have to build a connector for EasyPost 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 EasyPost 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.