--- title: "Connect MailerLite Classic and Polar - APIANT.ai" description: "When \"New Group\" fires in MailerLite Classic, your agent runs \"Create Customer\" in Polar." canonical: "https://apiant.ai/connect/mailerlite-classic-to-polar" --- # Connect MailerLite Classic and Polar When **New Group** fires in [MailerLite Classic](https://apiant.ai/connections/mailerlite-classic), your agent runs **Create Customer** in [Polar](https://apiant.ai/connections/polar), or **Benefit Created** in Polar to **Add Subscriber to Group** in MailerLite Classic. Describe the whole flow and it is built, tested on every scenario and kept running. MailerLite Classic **1** trigger MailerLite Classic **18** actions Polar **21** triggers Polar **26** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want MailerLite Classic and Polar 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 MailerLite Classic and Polar can do together ### From MailerLite Classic to Polar - When **New Group** in MailerLite Classic then **Create Customer** in Polar - When **New Group** in MailerLite Classic then **Add Subscription** in Polar ### From Polar to MailerLite Classic - When **Benefit Created** in Polar then **Add Subscriber to Group** in MailerLite Classic - When **Benefit Updated** in Polar then **Create Campaign** in MailerLite Classic 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 MailerLite Classic and Polar ## Triggers and actions 22 triggers · 44 actions - Trigger **New Group** Triggered when a new subscriber group is created in MailerLite. - Action **Add Subscriber to Group** Adds a subscriber to a MailerLite group, creating the subscriber if they do not exist yet. - Action **Create Campaign** Creates a new regular or A/B email campaign addressed to the chosen groups or segments. Its HTML content is added afterwards. - Action **Create Group** Creates a new subscriber group in the MailerLite account and returns the created group. - Action **Delete Campaign** Deletes a campaign from the MailerLite account. A scheduled campaign cannot be deleted until it has been cancelled. - Action **Delete Group** Deletes a subscriber group from the MailerLite account. - Action **Find Group by Name** Returns the subscriber groups that match the specified group name. - Action **Get Group** Returns one subscriber group by its id, including its name, subscriber counts, email activity totals and dates. - Action **List Campaigns** Returns the campaigns in your MailerLite account with the chosen status, with a basic summary and open and click stats for each campaign. - Action **List Groups** Returns the subscriber groups in the MailerLite account, with each group's subscriber counts, email stats and created and updated dates. - Action **List Segments** Returns the segments stored in your MailerLite account, with each segment's title, rules, subscriber count and email engagement totals. - Action **List Subscriber Groups** Returns the groups a subscriber belongs to, with each group's subscriber counts and sent, opened and clicked totals. - Action **List Subscribers** Returns the subscribers in the MailerLite account, optionally limited to one status such as active or unsubscribed. - Action **Remove Subscriber From a Group** Removes a subscriber from a group, identified by the subscriber's id or email address. The subscriber stays in the account and in any other groups. - Action **Search Subscribers** Returns the subscribers in your MailerLite account that match a search term, such as an email address or name. - Action **Send Campaign** Sends a draft campaign immediately or schedules it for a later time, and returns the campaign with its status and emails. - Action **Set Campaign Content** Sets the HTML and plain-text content of a draft campaign, replacing what the campaign's email contains. - Action **Unsubscribe Subscriber** Marks a subscriber as unsubscribed across the MailerLite account and returns the updated subscriber. Their name and fields can be updated in the same step. - Action **Update Group** Renames an existing subscriber group and returns the updated group with its subscriber and email counts. - Trigger **Benefit Created** Triggered when a new benefit is created in Polar. - Trigger **Benefit Updated** Triggered when a benefit is changed in Polar. - Trigger **Checkout Created** Triggered when a new checkout session is created in Polar. - Trigger **Checkout Expired** Triggered when a checkout session expires in Polar without being paid. - Trigger **Checkout Updated** Triggered when a checkout session changes in Polar, for example when it is confirmed or paid. - Trigger **Customer Created** Triggered when a new customer is created in Polar. - Trigger **Customer Deleted** Triggered when a customer is deleted in Polar. - Trigger **Customer State Changed** Triggered when a customer's state changes in Polar - their active subscriptions, granted benefits or meters. - Trigger **Customer Updated** Triggered when a customer's details change in Polar. - Trigger **Order Created** Triggers when a new order is placed in your Polar organization. - Trigger **Order Paid** Triggers when an order in your Polar organization is paid. - Trigger **Order Updated** Triggers when an order in your Polar organization changes. - Trigger **Product Created** Triggers when a new product is created in your Polar organization. - Trigger **Product Updated** Triggers when a product in your Polar organization changes. - Trigger **Subscription Active** Triggers when a subscription in your Polar organization becomes active. - Trigger **Subscription Canceled** Triggers when a customer cancels a subscription in your Polar organization. - Trigger **Subscription Created** Triggers when a new subscription is created in your Polar organization. - Trigger **Subscription Past Due** Triggers when a subscription in your Polar organization falls past due because a payment failed. - Trigger **Subscription Revoked** Triggers when a subscription in your Polar organization is revoked and the customer loses access. - Trigger **Subscription Uncanceled** Triggers when a customer reverses a pending cancellation and keeps a subscription in your Polar organization. - Trigger **Subscription Updated** Triggers when a subscription in your Polar organization changes. - Action **Add Subscription** Subscribes a customer to a free recurring product. - Action **Confirm Checkout Session** Completes an open checkout session so Polar creates the order. Works without payment only when the checkout needs none, for example a free product. - Action **Create Benefit** Creates a benefit in Polar that you can attach to products. - Action **Create Checkout Session** Creates a Polar checkout session for a product and returns the link the customer pays through. - Action **Create Customer** Creates a customer in Polar. - Action **Create Discount** Creates a discount in Polar, either a percentage off or a fixed amount off. - Action **Create Product** Creates a product in Polar with its price or prices. - Action **Delete Customer** Deletes a customer in Polar. Their subscriptions are cancelled and their benefits revoked. - Action **Get Checkout Session** Returns one Polar checkout session by its id, including its status and payment link. - Action **Get Customer** Returns one customer from Polar by their id, including any metadata you stored on them. - Action **Get Product** Returns one product from Polar by its id, with its prices and attached benefits. - Action **Get Subscription** Returns one subscription from Polar by its id, with its status, amount and current period. - Action **List Benefits** Returns a page of benefits from Polar. - Action **List Checkout Sessions** Returns a page of checkout sessions from Polar. - Action **List Customers** Returns a page of customers from Polar. - Action **List Discounts** Returns the discount codes set up in your Polar organization, newest first. You can narrow the list by organization or by name text, and page through the results. - Action **List Orders** Returns the orders placed in your Polar organization. You can narrow the list by product, customer, subscription, checkout, discount or status, and page through the results. - Action **List Products** Returns the products in your Polar organization, with their prices and benefits. You can narrow the list by name text, archived state, one-time versus subscription, or a benefit, and page through the results. - Action **List Subscriptions** Returns the subscriptions in your Polar organization. You can narrow the list by product, customer, discount, active state or status, and page through the results. - Action **Revoke Subscription** Cancels a Polar subscription immediately, ending the customer's access right away rather than at the end of the billing period. - Action **Update Benefit** Changes a benefit's description, visibility, settings or metadata. - Action **Update Checkout Session** Changes an open checkout session: buyer details, product, amount, metadata or redirect links. - Action **Update Customer** Updates an existing Polar customer. Only the fields you fill in are changed; anything left blank keeps its current value. - Action **Update Order** Changes the billing name or billing address shown on an order's invoice. - Action **Update Product** Updates an existing Polar product. Only the fields you fill in are changed; anything left blank keeps its current value. - Action **Update Subscription** Changes an existing Polar subscription — switch its product, apply a discount, adjust seats, move the trial end, or schedule or reverse a cancellation. Only the fields you fill in are changed. ## Each app on its own - [ **MailerLite Classic** Use MailerLite Classic to stay connected with your customers through email marketing.](https://apiant.ai/connections/mailerlite-classic) - [ **Polar** Polar is a modern billing platform for developers & designers.](https://apiant.ai/connections/polar) Reviews ## What our customers say ## More from MailerLite Classic - [ **MailerLite Classic to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/mailerlite-classic-to-salesforce) - [ **MailerLite Classic to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/mailerlite-classic-to-slack) - [ **MailerLite Classic to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/mailerlite-classic-to-stripe) - [ **MailerLite Classic to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/mailerlite-classic-to-shopify) - [ **MailerLite Classic to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/mailerlite-classic-to-quickbooks-online) - [ **MailerLite Classic to Pipedrive** Pipedrive is a sales CRM and pipeline management tool.](https://apiant.ai/connect/mailerlite-classic-to-pipedrive) ## More into Polar - [ **Outlook to Polar** Outlook is Microsoft's email and calendaring platform integrating contacts and scheduling, enabling users to...](https://apiant.ai/connect/outlook-to-polar) - [ **Fillout Forms to Polar** Create powerful forms, surveys and quizzes your audience will answer with Fillout Forms.](https://apiant.ai/connect/fillout-forms-to-polar) - [ **Gallabox to Polar** Gallabox is no-code conversation workspace for business to grow sales](https://apiant.ai/connect/gallabox-to-polar) - [ **OutageDeck to Polar** OutageDeck aggregates the official status feeds of more than 170 cloud and SaaS providers into one place.](https://apiant.ai/connect/outagedeck-to-polar) - [ **HubSpot to Polar** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-polar) - [ **Google Sheets to Polar** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-polar) Questions ## MailerLite Classic and Polar, answered ### ### What can start an automation from MailerLite Classic? Any of MailerLite Classic's 1 trigger in the catalog, including New Group. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Polar when something happens in MailerLite Classic? Any of Polar's 26 actions, including Create Benefit, Create Checkout Session, Create Customer and Create Discount. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Polar to MailerLite Classic? Yes. When something happens in Polar, your agent can act in MailerLite Classic too. This page covers both directions: Polar's triggers and MailerLite Classic's actions are listed here as well. ### ### Do I have to build a connector for MailerLite Classic or Polar? 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 MailerLite Classic and Polar 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.