--- title: "Connect OnceHub to Smtp2Go - APIANT.ai" description: "When \"Booking Completed\" fires in OnceHub, your agent runs \"Add email\" in Smtp2Go." canonical: "https://apiant.ai/connect/oncehub-to-smtp2go" --- # Connect OnceHub to Smtp2Go When **Booking Completed** fires in [OnceHub](https://apiant.ai/connections/oncehub), your agent runs **Add email** in [Smtp2Go](https://apiant.ai/connections/smtp2go). Describe the whole flow and it is built, tested on every scenario and kept running. OnceHub **15** triggers OnceHub **17** actions Smtp2Go **22** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want OnceHub and Smtp2Go 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 OnceHub can start in Smtp2Go - When **Booking Completed** in OnceHub then **Add email** in Smtp2Go - When **Contact Updated** in OnceHub then **Add single sender email** in Smtp2Go 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 OnceHub and Smtp2Go ## Triggers and actions 15 triggers · 39 actions - 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. - Action **Add email** Sends an email through SMTP2GO, either with your own subject and body or from a saved template, optionally scheduled for later delivery. - Action **Add sender domain** Adds a sender domain to your SMTP2GO account and returns the DNS records needed to verify it. - Action **Add single sender email** Add a single verified sender email address. - Action **Add SMTP user** Adds a new SMTP user to your SMTP2GO account, with its password, rate limit, tracking, archiving, feedback footer and bounce settings. - Action **Add suppression** Suppresses an email address or a whole domain so SMTP2GO no longer delivers to it. - Action **Add template** Creates an email template with a subject, HTML and plain-text content, and optional variables and tags. - Action **Delete scheduled email** Cancels an email that was scheduled to be sent later, using its schedule ID. - Action **Delete sender domain** Remove a sender domain. - Action **Delete single sender email** Removes a single sender email address from your SMTP2GO account (or a subaccount). - Action **Delete SMTP user** Remove an SMTP user. - Action **Delete suppression** Removes the suppression on an email address or domain so SMTP2GO will deliver to it again. - Action **Delete template** Remove an email template. - Action **Find scheduled emails** Returns emails that are scheduled to send later, optionally narrowed by schedule ID, subject, recipient or sender. - Action **Get template** View details of a specific email template. - Action **List emails** Lists sent emails (up to 5,000) matching the supplied date range and filters. - Action **List sender domains** Returns the sender domains on the SMTP2GO account, with their DNS verification details and tracking subdomains. - Action **List single sender emails** Lists the single sender email addresses on the SMTP2GO account with their verification status, optionally narrowed to one address. - Action **List SMTP users** View SMTP users. - Action **List subaccounts** Lists the subaccounts on the SMTP2GO account, optionally narrowed by search terms and state. - Action **List suppressions** View suppressed email addresses. - Action **List templates** Lists the email templates in your SMTP2GO account, optionally narrowed by search terms or tags. - Action **Update template** Changes the details of an existing SMTP2GO email template. Only the values you fill in are changed. ## Each app on its own - [ **OnceHub** Capture, qualify, and engage with inbound leads using ScheduleOnce, ChatOnce, FormOnce and SubmitOnce.](https://apiant.ai/connections/oncehub) - [ **Smtp2Go** Transactional email delivery service and API for sending, tracking, and monitoring bulk and transactional...](https://apiant.ai/connections/smtp2go) Reviews ## What our customers say ## More from OnceHub - [ **OnceHub to HeadshotPro** HeadshotPro is an AI Headshot Generator for Professional Headshots.](https://apiant.ai/connect/oncehub-to-headshotpro) - [ **OnceHub to Honeyhive** Observability and evaluation platform for tracing, testing, and monitoring AI agents in production.](https://apiant.ai/connect/oncehub-to-honeyhive) - [ **OnceHub to Powerlink** Cloud-based CRM platform (formerly Powerlink) for managing customer data, sales, and business workflows.](https://apiant.ai/connect/oncehub-to-powerlink) - [ **OnceHub to Zoho Calendar** Zoho Calendar is an online personal and business calendar app that helps you plan your schedule, track daily...](https://apiant.ai/connect/oncehub-to-zoho-calendar) - [ **OnceHub to Zoho Desk** Zoho Desk is web-based customer service software designed to help you focus more on creating customer...](https://apiant.ai/connect/oncehub-to-zoho-desk) - [ **OnceHub to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/oncehub-to-hubspot) ## More into Smtp2Go - [ **HubSpot to Smtp2Go** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-smtp2go) - [ **Salesforce to Smtp2Go** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-smtp2go) - [ **Slack to Smtp2Go** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-smtp2go) - [ **Google Sheets to Smtp2Go** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-smtp2go) - [ **Gmail to Smtp2Go** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-smtp2go) - [ **Google Calendar to Smtp2Go** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-smtp2go) Questions ## OnceHub and Smtp2Go, answered ### ### What can start an automation from OnceHub? Any of OnceHub's 15 triggers in the catalog, including Booking Completed, Contact Updated, Booking Lifecycle Event and Booking No-Show. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Smtp2Go when something happens in OnceHub? Any of Smtp2Go's 22 actions, including Update template, Add email, Add sender domain and Add single sender email. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Smtp2Go to OnceHub? Smtp2Go has no triggers in the catalog today, so automations start in OnceHub. If you need the other direction, ask: your agent reads Smtp2Go's API documentation and adds it. ### ### Do I have to build a connector for OnceHub or Smtp2Go? 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 OnceHub and Smtp2Go 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.