--- title: "Connect ActiveCampaign Postmark and OnceHub - APIANT.ai" description: "When \"New Bounce\" fires in ActiveCampaign Postmark, your agent runs \"Create Contact\" in OnceHub." canonical: "https://apiant.ai/connect/activecampaign-postmark-to-oncehub" --- # Connect ActiveCampaign Postmark and OnceHub When **New Bounce** fires in [ActiveCampaign Postmark](https://apiant.ai/connections/activecampaign-postmark), your agent runs **Create Contact** in [OnceHub](https://apiant.ai/connections/oncehub), or **Booking Completed** in OnceHub to **Send an Email** in ActiveCampaign Postmark. Describe the whole flow and it is built, tested on every scenario and kept running. ActiveCampaign Postmark **6** triggers ActiveCampaign Postmark **13** actions OnceHub **15** triggers OnceHub **17** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want ActiveCampaign Postmark and OnceHub 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 ActiveCampaign Postmark and OnceHub can do together ### From ActiveCampaign Postmark to OnceHub - When **New Bounce** in ActiveCampaign Postmark then **Create Contact** in OnceHub - When **New Delivery** in ActiveCampaign Postmark then **Update Contact** in OnceHub ### From OnceHub to ActiveCampaign Postmark - When **Booking Completed** in OnceHub then **Send an Email** in ActiveCampaign Postmark - When **Contact Updated** in OnceHub then **Send batch emails** in ActiveCampaign Postmark 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 ActiveCampaign Postmark and OnceHub ## Triggers and actions 21 triggers · 30 actions - Trigger **New Bounce** Triggers when an email sent through Postmark bounces. - Trigger **New Delivery** Triggers when Postmark confirms an email was accepted by a recipient's mail server (one event per recipient). - Trigger **New Email Open** Triggers when a recipient opens an email sent through Postmark with open tracking enabled. - Trigger **New Inbound Message** Triggers when an email arrives at the server's inbound address and Postmark parses it. - Trigger **New Link Click** Triggers when a recipient clicks a tracked link in an email for the first time. - Trigger **New Spam Complaint** Triggers when a recipient marks an email sent through Postmark as spam. - Action **Activate bounce** Reactivates an email address that Postmark deactivated because of a bounce, so it can receive email again. - Action **Add template** Creates a new email template (standard or layout) on your Postmark server. - Action **Delete template** Deletes an email template from your Postmark server by its ID or alias. - Action **Find bounces by criteria** Returns bounces on your Postmark server matching criteria such as bounce type, email address, tag, message, stream, or date range. - Action **Find outbound messages by criteria** Searches outbound email messages sent through your Postmark server by recipient, sender, tag, status, subject, date range or message stream. Returns up to 500 matching messages. - Action **Get bounce** Returns the details of a single bounce, including the bounced email address, bounce type, and whether the address can be reactivated. - Action **Get outbound message** Returns the full details of one sent email, including its bodies, recipients, status, metadata and delivery events. - Action **Get template** Returns a single email template, including its subject, HTML and text content, by its ID or alias. - Action **List templates** Returns the email templates on your Postmark server, optionally filtered by template type or layout. - Action **Send an Email** Sends a single email through your Postmark server. - Action **Send batch emails** Sends up to 500 emails in a single request and returns Postmark's per-message result for each. - Action **Send Email With Template** Sends an email rendered from one of your Postmark templates, filling it with the values you supply. - Action **Update template** Updates an existing Postmark template's name, subject, HTML or text content, alias, or layout. - Trigger **Booking Canceled** Triggers when a OnceHub booking is canceled by the customer or by someone on your team. - Trigger **Booking Cancelled and Rescheduled** Triggers when a customer cancels a OnceHub booking and then reschedules it on a different booking page. - Trigger **Booking Completed** Triggers when a OnceHub booking's end time has passed and the meeting is marked completed. - Trigger **Booking Lifecycle Event** Triggers on any OnceHub booking event — scheduled, rescheduled, reassigned, canceled, completed or no-show — with the event name included so you can branch on it. - Trigger **Booking No-Show** Triggers when a OnceHub booking is marked as a no-show. - Trigger **Booking Rescheduled** Triggers when a OnceHub booking is rescheduled to a new time. - Trigger **Booking Scheduled** Triggers when a new OnceHub booking is scheduled. - Trigger **Contact Captured** Triggers when a new contact is captured in OnceHub. - Trigger **Contact Lifecycle Event** Triggers whenever a OnceHub contact is created or changed, so you catch the whole contact lifecycle in one place. - Trigger **Contact Updated** Triggers when an existing OnceHub contact is updated. - Trigger **Conversation Abandoned** Triggers when a website visitor stops replying to a OnceHub chatbot for more than ten minutes and the conversation is abandoned. - Trigger **Conversation Closed** Triggers when a OnceHub chatbot conversation is closed. - Trigger **Conversation Lifecycle Event** Triggers on any OnceHub conversation event — started, closed or abandoned — with the event name included so you can branch on it. - Trigger **Conversation Started** Triggers when a website visitor sends their first message to a OnceHub chatbot and a conversation starts. - Trigger **Reassigned Booking** Triggers when a OnceHub booking is reassigned to a different host. - Action **Cancel Booking** Cancels a OnceHub booking, optionally with a reason and without emailing the customer. - Action **Create Contact** Creates a new contact in OnceHub. Give at least an email address or a mobile number. - Action **Create One-Time Booking Link** Creates a one-time booking link for a published OnceHub booking calendar, optionally prefilling the booking form and pinning the host or duration. - Action **Delete Contact** Deletes a contact from OnceHub. - Action **Find Contact** Finds a OnceHub contact by email address. - Action **Get Available Time Slots** Returns the open meeting times on a OnceHub booking calendar for the window you choose. - Action **Get Booking Calendar** Returns one OnceHub booking calendar with its host, public link and meeting length. - Action **Get Booking Details** Returns one OnceHub booking with its time, customer details and booking form answers. - Action **Get Contact** Returns one OnceHub contact with its details and custom fields. - Action **Get Contact's Future Meetings** Returns a contact's upcoming OnceHub meetings — the bookings that start after the time you give. - Action **List Booking Calendars** Lists the booking calendars in your OnceHub account. - Action **List Bookings** Lists OnceHub bookings, with optional filters for status, contact, host, calendar and date range. - Action **List Contacts** Lists the contacts in your OnceHub account, with optional email and date filters. - Action **Mark Booking as No-Show** Marks a OnceHub booking as a no-show. - Action **Reassign Booking** Reassigns a OnceHub booking to a different host, optionally naming the video conferencing service to use. - Action **Request Reschedule** Asks the customer to pick a new time for a OnceHub booking, optionally telling them why. - Action **Update Contact** Updates an existing OnceHub contact. Only the fields you fill in are changed; anything left blank keeps its current value. ## Each app on its own - [ **ActiveCampaign Postmark** Postmark is specifically built to deliver your app's emails to the inbox, fast.](https://apiant.ai/connections/activecampaign-postmark) - [ **OnceHub** Capture, qualify, and engage with inbound leads using ScheduleOnce, ChatOnce, FormOnce and SubmitOnce.](https://apiant.ai/connections/oncehub) Reviews ## What our customers say ## More from ActiveCampaign Postmark - [ **ActiveCampaign Postmark to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/activecampaign-postmark-to-hubspot) - [ **ActiveCampaign Postmark to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/activecampaign-postmark-to-salesforce) - [ **ActiveCampaign Postmark to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/activecampaign-postmark-to-slack) - [ **ActiveCampaign Postmark to Google Sheets** Google Sheets](https://apiant.ai/connect/activecampaign-postmark-to-google-sheets) - [ **ActiveCampaign Postmark to Gmail** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/activecampaign-postmark-to-gmail) - [ **ActiveCampaign Postmark to Google Calendar** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/activecampaign-postmark-to-google-calendar) ## More into OnceHub - [ **Alegra to OnceHub** Alegra is an accounting and billing app designed for Latin American managers.](https://apiant.ai/connect/alegra-to-oncehub) - [ **Breeze to OnceHub** Breeze is a simple project management tool that enables teams to plan, track and organize their work.](https://apiant.ai/connect/breeze-to-oncehub) - [ **Google Sheets to OnceHub** Google Sheets](https://apiant.ai/connect/google-sheets-to-oncehub) - [ **Google Calendar to OnceHub** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-oncehub) - [ **Google Drive to OnceHub** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-oncehub) - [ **Notion to OnceHub** A new tool that blends your everyday work apps into one. It's the all-in-one workspace for you and your team.](https://apiant.ai/connect/notion-to-oncehub) Questions ## ActiveCampaign Postmark and OnceHub, answered ### ### What can start an automation from ActiveCampaign Postmark? Any of ActiveCampaign Postmark's 6 triggers in the catalog, including New Bounce, New Delivery, New Email Open and New Inbound Message. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in OnceHub when something happens in ActiveCampaign Postmark? Any of OnceHub's 17 actions, including Create Contact, Create One-Time Booking Link, Update Contact and Find Contact. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from OnceHub to ActiveCampaign Postmark? Yes. When something happens in OnceHub, your agent can act in ActiveCampaign Postmark too. This page covers both directions: OnceHub's triggers and ActiveCampaign Postmark's actions are listed here as well. ### ### Do I have to build a connector for ActiveCampaign Postmark or OnceHub? 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 ActiveCampaign Postmark and OnceHub 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.