Papercut SMTP PapercutSMTP

Papercut SMTP is a versatile tool designed to simplify email testing and development by combining an email viewer with a built-in SMTP server (designed to receive messages only). It enables developers to view and analyze every aspect of an email—body, HTML, headers, attachments, and raw encoded data—without enforcing any restrictions on how emails are prepared. Papercut SMTP can be configured to run on startup and operate in the background, minimizing to the system tray and notifying users when new messages arrive.

Key Features:

• Rich Email Viewing: Displays all email components, including raw MIME sections and attachments.
• Instant Feedback: Notifies users when new emails are received, providing real-time updates.
• Startup Configuration: Runs automatically at startup and operates quietly in the system tray.
• Optional HTTP Service: Includes an HTTP server to receive emails even when the client is not running.

Audience & Benefit:

Ideal for developers and testers who need to validate email functionality during application or website development. Papercut SMTP streamlines testing by eliminating delays and reducing the risk of accidentally sending test emails to unintended recipients, ultimately speeding up the development cycle and improving efficiency. It can be installed via winget for easy setup on Windows systems.