Inbox Preview

What the inbox-preview MCP server does

The inbox-preview MCP server is described as a tool for rendering email content inside real webmail interfaces and producing screenshots of the result. Its supported email inputs are HTML and .eml files. The listed web clients are Gmail, Outlook, and Yahoo.

This makes the server relevant when the appearance of an email in a live inbox matters. A screenshot can provide a visual record of the rendered message in the selected web client, which differs from inspecting the source HTML or opening an .eml file in isolation.

The available material does not describe message composition, sending, mailbox search, reply handling, or other email operations. The stated scope is rendering and screenshot capture.

How it works

The inbox-preview MCP server takes an HTML or .eml email and renders it in one of the named webmail clients. After the message is rendered, it captures a screenshot. The result is therefore a visual preview tied to Gmail, Outlook, or Yahoo rather than a generic browser rendering.

The listing does not specify how the email is supplied, how a target client is selected, whether authentication is handled by the server, or what format the screenshot uses. Those details should be confirmed from the project documentation before implementation.

Tools and capabilities

The provided description supports these capabilities:

• Render HTML email content in Gmail, Outlook, or Yahoo web clients.
• Render .eml email files in those web clients.
• Capture screenshots of the rendered email.
• Preview email appearance in real webmail interfaces.

The material does not provide formal tool names, argument schemas, return values, or error behavior. Treat the capability list as a functional description rather than an API reference.

Limitations and notes

The inbox-preview MCP server’s documented scope is limited to rendering and screenshotting email in the three named web clients. No claims are provided about support for other inbox providers, mobile applications, desktop mail clients, browser automation workflows, or email delivery.

The repository README is unavailable in the supplied material. As a result, installation steps, transport details, required environment variables, supported MCP clients, authentication requirements, and licensing cannot be verified here. Developers evaluating it should confirm those items directly in the project source before deployment.

The description also does not state whether screenshots include the full message, viewport-specific output, attachments, blocked remote content, or interactive elements. These behaviors remain unspecified.