--- title: "Connect Returnless to MailerCheck - APIANT.ai" description: "When \"Request Created\" fires in Returnless, your agent runs \"Verify an Email Address\" in MailerCheck." canonical: "https://apiant.ai/connect/returnless-to-mailercheck" --- # Connect Returnless to MailerCheck When **Request Created** fires in [Returnless](https://apiant.ai/connections/returnless), your agent runs **Verify an Email Address** in [MailerCheck](https://apiant.ai/connections/mailercheck). Describe the whole flow and it is built, tested on every scenario and kept running. Returnless **2** triggers Returnless **16** actions MailerCheck **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 Returnless and MailerCheck 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 Returnless can start in MailerCheck - When **Request Created** in Returnless then **Verify an Email Address** in MailerCheck - When **Return Created** in Returnless then **Verify email address asynchronously** in MailerCheck 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 Returnless and MailerCheck ## Triggers and actions 2 triggers · 26 actions - Trigger **Request Created** Triggers when a customer creates a new return request that needs approval. - Trigger **Return Created** Triggers when a new return is created, including a request once it is approved. - Action **Add note** Adds an internal note to a return or return request. - Action **Add Request** Creates a return request in Returnless for items from an existing sales order. - Action **Approve a Request** Approves a return request in Returnless so the customer can send the items back. - Action **Approve a Request Without Shipment** Approves a pending return request without a return shipment, so the customer keeps the items. - Action **Find customers** Returns the customers in your Returnless account that match an email address. - Action **Find products** Returns the products in your Returnless account that match a SKU. - Action **Find Requests** Finds a Request in your Returnless account. - Action **Find Returns** Finds returns (return orders) in Returnless by return number. - Action **Find sales orders** Finds sales orders in Returnless by order number. - Action **Get customer** Returns a single Returnless customer by its id. - Action **Get Request (By Request ID)** Returns a single return request (return order) from Returnless by its ID. - Action **Get Return (By Return ID)** Returns a single return in Returnless, with all of its details, by its return ID. - Action **Get sales order** Returns a single sales order by its ID, including its customer, address and order details. - Action **List return reasons** Returns the return reasons configured in your Returnless account. - Action **Reject Request** Rejects a pending return request in Returnless. - Action **Update return** Changes the status of a return, such as Checked, Approved or Resolved. - Action **Add list** Creates a new MailerCheck verification list with a name and a set of email addresses. - Action **Delete list** Deletes a MailerCheck email list by its ID. - Action **Get account** Returns the MailerCheck account linked to the connected API token, including its name, address details and credit balance. - Action **Get credit balance** Returns the number of email verification credits remaining on your MailerCheck account. - Action **Get email verification result** Returns the state and result of an email verification started asynchronously. - Action **Get list** Returns an email verification list by its ID, including its status and verification result statistics. - Action **List list results** Returns the individual email addresses in a MailerCheck list along with each one's verification result, optionally filtered to one result type. - Action **Verify an Email Address** Verifies a single email address in real time and returns its verification result (valid, risky or do-not-send category). - Action **Verify email address asynchronously** Queues a single email address for verification and returns a verification id to fetch the result later. - Action **Verify list** Starts verification of every email in an existing MailerCheck list and returns the list with its processing status. ## Each app on its own - [ **Returnless** Returnless gives e-commerce businesses a way to get their returns in check.](https://apiant.ai/connections/returnless) - [ **MailerCheck** MailerCheck is an easy-to-use email and campaign analysis tool.](https://apiant.ai/connections/mailercheck) Reviews ## What our customers say ## More from Returnless - [ **Returnless to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/returnless-to-salesforce) - [ **Returnless to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/returnless-to-slack) - [ **Returnless to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/returnless-to-stripe) - [ **Returnless to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/returnless-to-shopify) - [ **Returnless to Trello** Trello is a visual collaboration tool that organizes projects into boards, lists, and cards.](https://apiant.ai/connect/returnless-to-trello) - [ **Returnless to Zoom** Zoom unifies cloud video conferencing, simple online meetings, group messaging, and a software-based...](https://apiant.ai/connect/returnless-to-zoom) ## More into MailerCheck - [ **HubSpot to MailerCheck** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-mailercheck) - [ **Salesforce to MailerCheck** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-mailercheck) - [ **Slack to MailerCheck** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-mailercheck) - [ **Google Sheets to MailerCheck** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-mailercheck) - [ **Gmail to MailerCheck** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-mailercheck) - [ **Google Calendar to MailerCheck** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-mailercheck) Questions ## Returnless and MailerCheck, answered ### ### What can start an automation from Returnless? Any of Returnless's 2 triggers in the catalog, including Request Created and Return Created. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in MailerCheck when something happens in Returnless? Any of MailerCheck's 10 actions, including Add list, Get account, Get credit balance and Get email verification result. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from MailerCheck to Returnless? MailerCheck has no triggers in the catalog today, so automations start in Returnless. If you need the other direction, ask: your agent reads MailerCheck's API documentation and adds it. ### ### Do I have to build a connector for Returnless or MailerCheck? 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 Returnless and MailerCheck 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.