--- title: "Connect Mailbox Power to JustCall - APIANT.ai" description: "When \"New Contact Added to Group\" fires in Mailbox Power, your agent runs \"Update Contact\" in JustCall." canonical: "https://apiant.ai/connect/mailbox-power-to-justcall" --- # Connect Mailbox Power to JustCall When **New Contact Added to Group** fires in [Mailbox Power](https://apiant.ai/connections/mailbox-power), your agent runs **Update Contact** in [JustCall](https://apiant.ai/connections/justcall). Describe the whole flow and it is built, tested on every scenario and kept running. Mailbox Power **2** triggers Mailbox Power **4** actions JustCall **10** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Mailbox Power and JustCall 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 Mailbox Power can start in JustCall - When **New Contact Added to Group** in Mailbox Power then **Update Contact** in JustCall - When **Updated Contact** in Mailbox Power then **Find Contact** in JustCall 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 Mailbox Power and JustCall ## Triggers and actions 2 triggers · 14 actions - Trigger **New Contact Added to Group** Triggers when a contact is added to the selected Mailbox Power contact group. - Trigger **Updated Contact** Triggers when a contact in Mailbox Power is added or any of its details change. - Action **Create or Update Contact** Creates a contact in Mailbox Power, or updates the existing contact whose name and address match. - Action **Delete Contact** Deletes a contact from your Mailbox Power account. - Action **List contacts** Returns every contact in the Mailbox Power account, including address, contact details and group membership. - Action **Remove Contact From Group** Removes a contact from a Mailbox Power contact group. - Action **Add Contact to Sales Dialer Campaign** Adds a contact to a JustCall Sales Dialer campaign. Identify the contact by its Sales Dialer contact ID or by phone number; if the phone number does not match an existing contact, a new contact is created and added. Details passed for an existing contact update that contact. - Action **Add Sales Dialer Campaign** Creates a new Sales Dialer campaign. - Action **Delete Contact From Sales Dialer Campaign** This action allows you to delete a contact from an existing Sales Dialer Campaign - Action **Find Contact** Returns the JustCall contacts that match the specified phone number and/or first and last name. - Action **Get Contact** Retrieves a single JustCall contact by its id. - Action **List Contacts** Lists contacts in the JustCall account, optionally filtered by agent, phone number, name or status. Returns up to 500 contacts. - Action **List Phone Numbers** Lists the phone numbers on your JustCall account, optionally filtered by type, capability, owner, sharing or business hours setting. - Action **List Sales Dialer Campaigns** Returns all Sales Dialer campaigns on the account. - Action **List Users** Lists the users in your JustCall account, optionally filtered by availability, email, user group or role. - Action **Update Contact** Updates an existing contact in JustCall's Contacts, located by its id or its primary phone number. Contact status (DND/DNM/Blacklist) cannot be changed with this action. ## Each app on its own - [ **Mailbox Power** Mailbox Power enables you to engage your customers and stay top of mind with your clients by sending...](https://apiant.ai/connections/mailbox-power) - [ **JustCall** JustCall helps sales and support teams to connect easily with their leads & customers.](https://apiant.ai/connections/justcall) Reviews ## What our customers say ## More from Mailbox Power - [ **Mailbox Power to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/mailbox-power-to-salesforce) - [ **Mailbox Power to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/mailbox-power-to-slack) - [ **Mailbox Power to Mailchimp** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailbox-power-to-mailchimp) - [ **Mailbox Power to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/mailbox-power-to-stripe) - [ **Mailbox Power to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/mailbox-power-to-shopify) - [ **Mailbox Power to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/mailbox-power-to-quickbooks-online) ## More into JustCall - [ **HubSpot to JustCall** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-justcall) - [ **Salesforce to JustCall** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-justcall) - [ **Slack to JustCall** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-justcall) - [ **Google Sheets to JustCall** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-justcall) - [ **Gmail to JustCall** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-justcall) - [ **Google Calendar to JustCall** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-justcall) Questions ## Mailbox Power and JustCall, answered ### ### What can start an automation from Mailbox Power? Any of Mailbox Power's 2 triggers in the catalog, including New Contact Added to Group and Updated Contact. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in JustCall when something happens in Mailbox Power? Any of JustCall's 10 actions, including Update Contact, Add Contact to Sales Dialer Campaign, Add Sales Dialer Campaign and Find Contact. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from JustCall to Mailbox Power? JustCall has no triggers in the catalog today, so automations start in Mailbox Power. If you need the other direction, ask: your agent reads JustCall's API documentation and adds it. ### ### Do I have to build a connector for Mailbox Power or JustCall? 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 Mailbox Power and JustCall 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.