# Mailboxlayer integrations Connect Mailboxlayer to any other app, or use it from your AI client over MCP. REST API for email address validation, checking syntax, SMTP deliverability, disposable domains, and catch-all status. Connects with an API key [mailboxlayer.com](https://mailboxlayer.com/) **1** action What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want to automate with Mailboxlayer? 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) Popular ## Mailboxlayer with the apps people pair it with most - [ **HubSpot to Mailboxlayer** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-mailboxlayer) - [ **Salesforce to Mailboxlayer** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-mailboxlayer) - [ **Slack to Mailboxlayer** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-mailboxlayer) - [ **Google Sheets to Mailboxlayer** Google Sheets](https://apiant.ai/connect/google-sheets-to-mailboxlayer) - [ **Gmail to Mailboxlayer** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-mailboxlayer) - [ **Google Calendar to Mailboxlayer** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-mailboxlayer) - [ **Google Drive to Mailboxlayer** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-mailboxlayer) - [ **Mailchimp to Mailboxlayer** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailchimp-to-mailboxlayer) Pair it ## Connect Mailboxlayer with another app - [ **HubSpot to Mailboxlayer**](https://apiant.ai/connect/hubspot-to-mailboxlayer) - [ **Salesforce to Mailboxlayer**](https://apiant.ai/connect/salesforce-to-mailboxlayer) - [ **Slack to Mailboxlayer**](https://apiant.ai/connect/slack-to-mailboxlayer) - [ **Google Sheets to Mailboxlayer**](https://apiant.ai/connect/google-sheets-to-mailboxlayer) - [ **Gmail to Mailboxlayer**](https://apiant.ai/connect/gmail-to-mailboxlayer) - [ **Google Calendar to Mailboxlayer**](https://apiant.ai/connect/google-calendar-to-mailboxlayer) - [ **Google Drive to Mailboxlayer**](https://apiant.ai/connect/google-drive-to-mailboxlayer) - [ **Mailchimp to Mailboxlayer**](https://apiant.ai/connect/mailchimp-to-mailboxlayer) - [ **Stripe to Mailboxlayer**](https://apiant.ai/connect/stripe-to-mailboxlayer) - [ **Shopify to Mailboxlayer**](https://apiant.ai/connect/shopify-to-mailboxlayer) - [ **QuickBooks Online to Mailboxlayer**](https://apiant.ai/connect/quickbooks-online-to-mailboxlayer) - [ **Pipedrive to Mailboxlayer**](https://apiant.ai/connect/pipedrive-to-mailboxlayer) - [ **ActiveCampaign to Mailboxlayer**](https://apiant.ai/connect/activecampaign-to-mailboxlayer) - [ **Notion to Mailboxlayer**](https://apiant.ai/connect/notion-to-mailboxlayer) - [ **Airtable to Mailboxlayer**](https://apiant.ai/connect/airtable-to-mailboxlayer) - [ **Trello to Mailboxlayer**](https://apiant.ai/connect/trello-to-mailboxlayer) - [ **Asana to Mailboxlayer**](https://apiant.ai/connect/asana-to-mailboxlayer) - [ **JIRA to Mailboxlayer**](https://apiant.ai/connect/jira-to-mailboxlayer) - [ **ClickUp to Mailboxlayer**](https://apiant.ai/connect/clickup-to-mailboxlayer) - [ **Zoom to Mailboxlayer**](https://apiant.ai/connect/zoom-to-mailboxlayer) - [ **Discord to Mailboxlayer**](https://apiant.ai/connect/discord-to-mailboxlayer) - [ **Twilio to Mailboxlayer**](https://apiant.ai/connect/twilio-to-mailboxlayer) - [ **SendGrid to Mailboxlayer**](https://apiant.ai/connect/sendgrid-to-mailboxlayer) - [ **Outlook to Mailboxlayer**](https://apiant.ai/connect/outlook-to-mailboxlayer) - [ **Intercom to Mailboxlayer**](https://apiant.ai/connect/intercom-to-mailboxlayer) - [ **Freshdesk to Mailboxlayer**](https://apiant.ai/connect/freshdesk-to-mailboxlayer) - [ **Brevo to Mailboxlayer**](https://apiant.ai/connect/brevo-to-mailboxlayer) - [ **Typeform to Mailboxlayer**](https://apiant.ai/connect/typeform-to-mailboxlayer) - [ **JotForm to Mailboxlayer**](https://apiant.ai/connect/jotform-to-mailboxlayer) - [ **Calendly to Mailboxlayer**](https://apiant.ai/connect/calendly-to-mailboxlayer) - [ **PandaDoc to Mailboxlayer**](https://apiant.ai/connect/pandadoc-to-mailboxlayer) - [ **Webflow to Mailboxlayer**](https://apiant.ai/connect/webflow-to-mailboxlayer) - [ **Wix to Mailboxlayer**](https://apiant.ai/connect/wix-to-mailboxlayer) - [ **Instagram to Mailboxlayer**](https://apiant.ai/connect/instagram-to-mailboxlayer) - [ **OpenAI to Mailboxlayer**](https://apiant.ai/connect/openai-to-mailboxlayer) - [ **OneDrive to Mailboxlayer**](https://apiant.ai/connect/onedrive-to-mailboxlayer) - [ **Google Docs to Mailboxlayer**](https://apiant.ai/connect/google-docs-to-mailboxlayer) - [ **Ontraport to Mailboxlayer**](https://apiant.ai/connect/ontraport-to-mailboxlayer) - [ **Freshworks CRM to Mailboxlayer**](https://apiant.ai/connect/freshworks-crm-to-mailboxlayer) - [ **Capsule CRM to Mailboxlayer**](https://apiant.ai/connect/capsule-crm-to-mailboxlayer) - [ **Copper to Mailboxlayer**](https://apiant.ai/connect/copper-to-mailboxlayer) - [ **Streak to Mailboxlayer**](https://apiant.ai/connect/streak-to-mailboxlayer) - [ **NetHunt CRM to Mailboxlayer**](https://apiant.ai/connect/nethunt-crm-to-mailboxlayer) - [ **MINDBODY to Mailboxlayer**](https://apiant.ai/connect/mindbody-to-mailboxlayer) - [ **PostgreSQL to Mailboxlayer**](https://apiant.ai/connect/postgresql-to-mailboxlayer) - [ **MySQL to Mailboxlayer**](https://apiant.ai/connect/mysql-to-mailboxlayer) - [ **Vercel to Mailboxlayer**](https://apiant.ai/connect/vercel-to-mailboxlayer) - [ **PagerDuty to Mailboxlayer**](https://apiant.ai/connect/pagerduty-to-mailboxlayer) - [ **Gravity Forms to Mailboxlayer**](https://apiant.ai/connect/gravity-forms-to-mailboxlayer) - [ **HubSpot Enterprise to Mailboxlayer**](https://apiant.ai/connect/hubspot-enterprise-to-mailboxlayer) - [ **Google Forms to Mailboxlayer**](https://apiant.ai/connect/google-forms-to-mailboxlayer) - [ **monday.com to Mailboxlayer**](https://apiant.ai/connect/monday-com-to-mailboxlayer) - [ **Google Ads to Mailboxlayer**](https://apiant.ai/connect/google-ads-to-mailboxlayer) - [ **Google Tasks to Mailboxlayer**](https://apiant.ai/connect/google-tasks-to-mailboxlayer) - [ **Telegram to Mailboxlayer**](https://apiant.ai/connect/telegram-to-mailboxlayer) - [ **MailerLite to Mailboxlayer**](https://apiant.ai/connect/mailerlite-to-mailboxlayer) - [ **Google Contacts to Mailboxlayer**](https://apiant.ai/connect/google-contacts-to-mailboxlayer) - [ **Kit to Mailboxlayer**](https://apiant.ai/connect/kit-to-mailboxlayer) - [ **Tally to Mailboxlayer**](https://apiant.ai/connect/tally-to-mailboxlayer) - [ **Kajabi to Mailboxlayer**](https://apiant.ai/connect/kajabi-to-mailboxlayer) What your agent can do with Mailboxlayer ## Triggers and actions 1 action - Action **Validate email address** Checks a single email address for valid syntax, MX and SMTP existence, catch-all, role, free and disposable providers, and returns a quality score with a did-you-mean suggestion. Reviews ## What our customers say Questions ## Mailboxlayer, answered ### ### Is there a Mailboxlayer MCP server? APIANT's MCP server at https://mcp.apiant.ai works with Mailboxlayer. Add that address to any AI client that takes a remote MCP server and sign in once in your browser. Your client can then run Mailboxlayer actions on demand, or have APIANT build, test and run automations that use Mailboxlayer. Nothing to install. ### ### What can your agent do in Mailboxlayer? Any of Mailboxlayer's 1 action, including Validate email address. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can I use Mailboxlayer directly from Claude, ChatGPT or Cursor? Yes. Connect your AI client to APIANT once and it works with Mailboxlayer two ways. Ask it to do something in Mailboxlayer 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 on its own. A one-off action uses your plan's tasks the same way an automation step does. ### ### Do I need to write code against the Mailboxlayer API? No. APIANT connects to the Mailboxlayer API for you, with your Mailboxlayer API key. Describe what you want in plain language and your agent builds it on the Mailboxlayer triggers and actions in the catalog. If you need an endpoint that is not there yet, your agent reads the Mailboxlayer API documentation and adds it. ### ### Which apps can Mailboxlayer connect to? Any app in the catalog; the list on this page pairs Mailboxlayer with each of them. If the other app is missing, point your agent at its API documentation and it builds the connector. ### ### 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.