railsware/mailtrap-mcp

MCP Mailtrap Server

An MCP server that provides tools for sending and testing in sandbox via Mailtrap.

Prerequisites

Before using this MCP server, you need to:

1. Create a Mailtrap account
2. Verify your domain
3. Get your API token from Mailtrap API settings
4. Get your Account ID from Mailtrap account management

Required Environment Variables:

• MAILTRAP_API_TOKEN - Required for all functionality
• MAILTRAP_ACCOUNT_ID - Required for templates, stats, email logs, sandbox list/show, and sending domains. Optional only for send-email and send-sandbox-email.

Optional (can be passed as tool parameters instead):

• DEFAULT_FROM_EMAIL - Default sender email when from is not provided to send-email or send-sandbox-email. Enables switching sender per call via the from parameter.
• MAILTRAP_TEST_INBOX_ID - Default test inbox ID for sandbox tools when test_inbox_id is not provided. Enables switching between inboxes per call via the test_inbox_id parameter.
• MAILTRAP_SANDBOX_ID - Default sandbox ID for sandbox tools when sandbox_id is not provided. Enables switching between sandboxes per call via the sandbox_id parameter.
• MAILTRAP_ORGANIZATION_ID - Required for organization tools (list-sub-accounts, create-sub-account).
• MAILTRAP_ORGANIZATION_API_TOKEN - Organization-scoped API token. Required for organization tools (separate from MAILTRAP_API_TOKEN).