Local Email Testing for Developers

• Built-in SMTP Server: Runs a real SMTP server on localhost:1025, capturing all outgoing emails during local development without sending them to the internet.

• No Cloud, No Subscription: A native desktop application that works completely offline, requiring no cloud services or recurring fees.

• Instant Previews: View emails instantly in a local inbox with responsive previews for desktop, tablet, and mobile.

• Dark Mode Testing: Toggle between light and dark rendering to ensure consistent email appearance.

• Raw Email Inspection: Inspect raw MIME source, headers, and the full SMTP conversation log for detailed debugging.

• Organization Features: Star important emails and organize them into named collections for easy management and comparison.

• Cross-Platform Compatibility: Available for macOS, Windows, and Linux.

• Easy Integration: Works with any framework that supports SMTP, requiring minimal configuration (e.g., setting host to localhost and port to 1025).

• AI Debugging: Debug emails with AI tools like ChatGPT or Claude.

• Resend and Replay: Options to resend emails via SMTP or replay them through inbound processing.

LocalMail.dev offers a privacy-first, fully offline alternative to cloud-based email testing tools. It provides a seamless experience for developers to test transactional emails, verify template rendering, and debug issues safely during the development phase. The one-time purchase model ensures continuous access without ongoing subscription costs.