--- title: "Connect PostStack and US Global Mail - APIANT.ai" description: "When \"Contact Updated (instant)\" fires in PostStack, your agent runs \"Update mail item\" in US Global Mail." canonical: "https://apiant.ai/connect/poststack-to-us-global-mail" --- # Connect PostStack and US Global Mail When **Contact Updated (instant)** fires in [PostStack](https://apiant.ai/connections/poststack), your agent runs **Update mail item** in [US Global Mail](https://apiant.ai/connections/us-global-mail), or **New Mail **in US Global Mail to **Add a contact** in PostStack. Describe the whole flow and it is built, tested on every scenario and kept running. PostStack **7** triggers PostStack **31** actions US Global Mail **1** trigger US Global Mail **16** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want PostStack and US Global Mail 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 PostStack and US Global Mail can do together ### From PostStack to US Global Mail - When **Contact Updated (instant)** in PostStack then **Update mail item** in US Global Mail - When **New Contact (instant)** in PostStack then **Discard mail item** in US Global Mail ### From US Global Mail to PostStack - When **New Mail **in US Global Mail then **Add a contact** in PostStack - When **New Mail **in US Global Mail then **Add contacts to segment** in PostStack 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 PostStack and US Global Mail ## Triggers and actions 8 triggers · 47 actions - 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. - Trigger **New Mail** Triggers when a new mail item arrives in your US Global Mail mailbox. - Action **Add address** Adds a new shipping or check-deposit address to your US Global Mail account. - Action **Add folder** Creates a new mail folder with a name and an optional color. - Action **Add scan request** Requests a scan of a mail item, or has it opened and its contents scanned. This is a billable action on the US Global Mail account. - Action **Archive mail item** Moves a mail item out of the active inbox into the archive and returns the updated mail item. - Action **Delete folder** Deletes a folder. Mail in the folder is not deleted; it simply becomes unfiled. - Action **Discard mail item** Asks the mailroom to discard a physical mail item. It can be undone with Undiscard within 7 days; after that the item is permanently shredded. - Action **Get account** Returns your US Global Mail account profile, including name, email, phone number, status and mailbox (PMB) number. - Action **Get mail item** Returns full detail for one mail item in your US Global Mail mailbox, including its status, sender, dimensions, weight, scan and folder. - Action **Get shipment** Returns the details of one shipment, including its status, tracking number, destination and packed mail items. - Action **List addresses** Returns the shipping and deposit addresses on your US Global Mail account, optionally filtered by type. - Action **List folders** Returns all of your US Global Mail folders, with each folder's name and color. - Action **List mail items** Returns the mail items in your mailbox, with optional filters for status, type, folder, scan state, arrival period, read state and search text. - Action **List scans** Returns your scan and open-and-scan requests, optionally filtered by status, type, mail item, search text or scan date. - Action **List shipments** Returns your shipment requests (shipments, returns to sender, check deposits and pickups), optionally filtered by type and status. - Action **Update folder** Renames a mail folder or changes its color. - Action **Update mail item** Marks a mail item as read or unread and/or moves it into a folder, and returns the updated mail item. ## Each app on its own - [ **PostStack** EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics](https://apiant.ai/connections/poststack) - [ **US Global Mail** US Global Mail is a virtual mailbox tool that allows you to seamlessly access and control your mail items...](https://apiant.ai/connections/us-global-mail) Reviews ## What our customers say ## More from PostStack - [ **PostStack to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/poststack-to-salesforce) - [ **PostStack to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/poststack-to-slack) - [ **PostStack to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/poststack-to-stripe) - [ **PostStack to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/poststack-to-shopify) - [ **PostStack to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/poststack-to-quickbooks-online) - [ **PostStack to Trello** Trello is a visual collaboration tool that organizes projects into boards, lists, and cards.](https://apiant.ai/connect/poststack-to-trello) ## More into US Global Mail - [ **HubSpot to US Global Mail** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-us-global-mail) - [ **Salesforce to US Global Mail** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-us-global-mail) - [ **Slack to US Global Mail** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-us-global-mail) - [ **Google Sheets to US Global Mail** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-us-global-mail) - [ **Gmail to US Global Mail** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-us-global-mail) - [ **Google Calendar to US Global Mail** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-us-global-mail) Questions ## PostStack and US Global Mail, answered ### ### What can start an automation from PostStack? Any of PostStack's 7 triggers in the catalog, including Contact Updated (instant), New Contact (instant), New Inbound Email and New Sent Email (instant). Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in US Global Mail when something happens in PostStack? Any of US Global Mail's 16 actions, including Update folder, Update mail item, Add address and Add folder. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from US Global Mail to PostStack? Yes. When something happens in US Global Mail, your agent can act in PostStack too. This page covers both directions: US Global Mail's triggers and PostStack's actions are listed here as well. ### ### Do I have to build a connector for PostStack or US Global Mail? 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 PostStack and US Global Mail 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.