--- title: "Connect Stax to Mailsoftly - APIANT.ai" description: "When \"List Payment\" fires in Stax, your agent runs \"Add contact list\" in Mailsoftly." canonical: "https://apiant.ai/connect/stax-to-mailsoftly" --- # Connect Stax to Mailsoftly When **List Payment** fires in [Stax](https://apiant.ai/connections/stax), your agent runs **Add contact list** in [Mailsoftly](https://apiant.ai/connections/mailsoftly). Describe the whole flow and it is built, tested on every scenario and kept running. Stax **1** trigger Stax **17** actions Mailsoftly **20** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Stax and Mailsoftly 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 Stax can start in Mailsoftly - When **List Payment** in Stax then **Add contact list** in Mailsoftly - When **List Payment** in Stax then **Add contact note** in Mailsoftly 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 Stax and Mailsoftly ## Triggers and actions 1 trigger · 37 actions - Trigger **List Payment** Triggers when a new payment transaction is recorded in Stax. - Action **Capture payment** Captures funds from a pre-authorized Stax transaction, turning the pre-authorization into a completed charge. Returns the updated transaction. - Action **Create Customer** Creates a customer record on the Stax merchant account and returns the new customer. - Action **Create Item** Creates an item in the merchant's Stax catalog and returns the new catalog item. - Action **Create Scheduled Invoice** Creates a scheduled invoice that automatically generates invoices for a customer on a one-time or recurring schedule, with optional autopay. Returns the new schedule. - Action **Delete Catalog Item** Deletes a catalog item from Stax. - Action **Delete payment method** Deletes a customer's saved payment method in Stax and returns the deleted payment method. - Action **Delete Scheduled Invoice** Deletes a recurring invoice schedule so it stops generating invoices. - Action **Find Customers** Searches your Stax customers by name, email, company, phone, address or other details and returns the matching customers. - Action **Find Invoices** Returns the invoices on the Stax merchant account that match the search criteria you supply, such as keywords, customer name, company, email, price, schedule or payment method. - Action **Find Items** Searches the merchant's catalog for items matching a name, code, price or other criteria and returns the matching items. - Action **Find Payment Methods** Returns all saved payment methods (cards and bank accounts) for a Stax customer. - Action **Find Payments** Returns the payments and other transactions on the merchant account that match the search criteria, such as keywords, customer, date range, amount, type or status. - Action **Make a Payment** Charges a customer's saved payment method for the amount you specify, or places a pre-authorization to capture later. Returns the resulting transaction. - Action **Refund payment** Refunds all or part of a settled Stax payment transaction back to the customer. - Action **Update customer** Updates an existing customer's contact details, address, notes and options in Stax, and returns the updated customer. - Action **Update invoice** Updates an existing unpaid invoice's customer, amounts, line items, memos and payment options, and returns the updated invoice. Fully paid invoices cannot be edited. - Action **Void payment** Voids a payment transaction in Stax before it settles, cancelling the charge. - Action **Add contact list** Creates a new, empty contact list in Mailsoftly with the name you give it and returns the new list's id. - Action **Add contact note** Writes a plain-text note on a Mailsoftly contact, visible to the whole team on the contact record. Optionally backdates the note to when the conversation happened. - Action **Add Global Unsubscribe** Globally unsubscribes an email address from all email campaigns and newsletters in the account, creating the contact if it does not exist yet. - Action **Add or update contact** Creates a new contact in Mailsoftly, or updates the existing contact with the same email address (or the given contact ID). - Action **Add Tag to Contact** Adds a tag to a contact, either an existing tag or one found or created by name. - Action **Add to Contact List** Adds an existing contact to an existing contact list. If the contact is already on the list, it returns an informational message instead of an error. - Action **Add to Suppression List** Adds an email address to your Mailsoftly suppression list so no further mail from the account goes to it, creating a contact for the address if none exists. - Action **Create Contact** Creates a new contact in your Mailsoftly account and returns the saved contact, including its new ID. - Action **Create Tag** Creates a contact tag in Mailsoftly, or returns the existing tag when one with the same name already exists. - Action **Delete contact** Permanently deletes a contact from Mailsoftly, along with its list memberships, tags and activity. - Action **Find contacts** Returns the contacts that exactly match the email address, first name and/or last name you supply. - Action **Get contact** Returns one contact by its id, with all of its details including address, company, subscription dates and custom fields. - Action **Get Contact Activity** Returns one contact's activity timeline, newest first: list and subscription events, campaign emails with their opens and clicks, and teammate notes. - Action **Get Contact Subscriptions** Returns one contact's email subscription state: whether the address is suppressed or globally unsubscribed, and which email types the contact receives. - Action **List contact lists** Returns all contact lists in your Mailsoftly account with their ids, names and contact counts. - Action **List Contacts in Contact List** Returns the contacts that belong to one contact list, with when each was added to the list. - Action **List Tags** Returns every contact tag in the account with its id, name and color. - Action **Remove contact from contact list** Removes a contact from one of your Mailsoftly contact lists. The contact record and its other list memberships are left untouched. - Action **Remove Tag to Contact** Removes one or more tags from a Mailsoftly contact, by tag or by tag name. The tags stay defined on the account for other contacts. - Action **Update Contact** Updates an existing Mailsoftly contact. Only the fields you fill in are changed; everything else on the contact keeps its current value. ## Each app on its own - [ **Stax** Stax makes it easy to accept payments in-person and online and provides businesses with the tools they need...](https://apiant.ai/connections/stax) - [ **Mailsoftly** Mailsoftly is a free email marketing tool designed to send personalized emails and newsletters.](https://apiant.ai/connections/mailsoftly) Reviews ## What our customers say ## More from Stax - [ **Stax to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/stax-to-stripe) - [ **Stax to Trello** Trello is a visual collaboration tool that organizes projects into boards, lists, and cards.](https://apiant.ai/connect/stax-to-trello) - [ **Stax to Zoom** Zoom unifies cloud video conferencing, simple online meetings, group messaging, and a software-based...](https://apiant.ai/connect/stax-to-zoom) - [ **Stax to Twilio** Cloud communications platform for sending SMS/MMS messages, making and managing voice calls, and looking up...](https://apiant.ai/connect/stax-to-twilio) - [ **Stax to Typeform** Build and publish online forms, surveys, and quizzes with Typeform.](https://apiant.ai/connect/stax-to-typeform) - [ **Stax to Webflow** Webflow is a professional website builder and CMS for designing, building, and launching responsive...](https://apiant.ai/connect/stax-to-webflow) ## More into Mailsoftly - [ **Better Stack to Mailsoftly** Better Stack is a tool to provide reliable monitoring with voice calls and beautiful on-call scheduling.](https://apiant.ai/connect/better-stack-to-mailsoftly) - [ **HubSpot to Mailsoftly** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-mailsoftly) - [ **Salesforce to Mailsoftly** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-mailsoftly) - [ **Slack to Mailsoftly** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-mailsoftly) - [ **Google Sheets to Mailsoftly** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-mailsoftly) - [ **Gmail to Mailsoftly** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-mailsoftly) Questions ## Stax and Mailsoftly, answered ### ### What can start an automation from Stax? Any of Stax's 1 trigger in the catalog, including List Payment. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Mailsoftly when something happens in Stax? Any of Mailsoftly's 20 actions, including Create Contact, Create Tag, Update Contact and Add contact list. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Mailsoftly to Stax? Mailsoftly has no triggers in the catalog today, so automations start in Stax. If you need the other direction, ask: your agent reads Mailsoftly's API documentation and adds it. ### ### Do I have to build a connector for Stax or Mailsoftly? 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 Stax and Mailsoftly 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.