PuffiMail is a high-performance smart mailbox sensor, thoughtfully designed and made in Japan for reliable mail detection and real-time notifications.
- **Precise Multi-Sensor Detection**
- Uses a high-accuracy **VL53L0X distance sensor**, ensuring precise detection of new mail. The VL53L0X provides superior resistance to ambient light and clutter, outperforming traditional infrared or ultrasonic sensors.
- Magnetic reed switches on three sides monitor door and lid state, minimizing false alarms for all mailbox types.
- **Unique magnetic polarity reversal switch** — Instantly adapts to any installation method for true plug-and-play. Just flip the switch to match any mounting direction and never worry about installation errors again.
- **Seamless MQTT Integration**
- PuffiMail communicates **directly via MQTT**, enabling instant automations and notifications in **Home Assistant** or any MQTT-compatible system. No complex setup—just connect to Wi-Fi, enter your MQTT details, and PuffiMail is ready, with **automatic discovery** in Home Assistant.
- **Ultra-Low Power, Convenient Charging**
- Firmware is highly optimized for low power: a single 18650 battery can last over one year. The device supports both **easy battery replacement** and USB Type-C charging.
- **Fully Open Source: Hardware & Firmware**
- Both the enclosure design **and the firmware code** are open source. You are free to 3D print your own case or create one that best fits your mailbox. You can also customize or entirely rewrite the device firmware to suit your own smart mailbox ideas—maximizing flexibility and creativity.
- **100% Local Data & Privacy**
- All detection and reporting are performed locally—**no cloud, no registration, and no data upload**. Your privacy is always protected.
- **Eco-Conscious and Lead-Free**
- Produced using **lead-free processes** and designed for environmental responsibility.
---
Professional, privacy-friendly, and truly open—PuffiMail is the most flexible smart mailbox sensor for your smart home journey.
Dimensions
144 x 32.5 x 31 mm
(5.7 x 1.3 x 1.2")
Power Supply
18650 Battery (not include)
Connectivity
Wi-Fi 2.4GHz, AP Mode Web Config
Supported Platforms
Home Assistant, Node-RED, OpenHAB, MQTT
Languages
English, Japanese, Chinese
Sleep Current
< 18μA (core), < 40μA (typ. full device, real measured)
Sensor Type
VL53L0X Time-of-Flight
OTA Update
Web-based (AP mode)
