Base
Hardened build
minimal ports, security patches applied at build time
smtp4dev
Azure
Streaming & Messaging
1 variation
smtp4dev, a fake SMTP server that captures outbound mail from your apps, ready to inspect every message in a web UI from first boot.
Variations
This product is available in the build below. Open it for the operating system, cloud and version detail, or read its deployment guide.
| Product | Cloud | Operating system | Version | |
|---|---|---|---|---|
| smtp4dev on Ubuntu 24.04 | Azure | Ubuntu 24.04 | Standard | View · Guide |
Overview
smtp4dev is a fake, developer focused SMTP server with a modern web interface. It catches email sent by applications during development and testing, shows every message with its HTML, text, source, headers and attachments, and never delivers mail to real recipients. A built in IMAP server also lets standard mail clients browse the captured messages.
Why the cloudimg image
cloudimg delivers smtp4dev hardened and fully patched, with the web interface protected by a unique password generated on first boot, its message store on a dedicated data volume, and a paired deployment guide. 24/7 support is included with every image.
Common uses
- Email testing in development
- SMTP capture and inspection
- Previewing outbound application mail
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