VMail Relay notification
- SafecomLink
- Dec 11, 2025
- 1 min read
Updated: Dec 29, 2025
The VMail Relay notification feature is designed to promptly alert a station when an asynchronous message (VMail) addressed to them is waiting to be collected. This mechanism functions whether the message is waiting at the original sending station or at an intermediary station (for relay).
Functionality and Mechanism
The core purpose of the relay notification is to ensure guaranteed delivery of VMails by closing the communication loop when the recipient is intermittently offline.
Message Holding: A VMail, once composed, is held at the transmitting station (in the Outbox for direct delivery) or at a mediator station (in Parking for relay).
Detection and Alert: The station holding the VMail monitors the frequency. Whenever it decodes a beacon transmitted by the destination station, it checks if it holds any VMails for that callsign.
Notification Transmission: If a VMail is pending, the holding station sends an asynchronous packet, called a "relay notification alert," via broadcast to the recipient. This alert signals that VMail(s) are waiting.
Recipient Retrieval: The recipient station receives the alert. The pending VMail is highlighted by a small envelope icon in the Beacons list. Recipients can simply double-click the callsign of the holding station in the alert list to establish a connection and download the VMail.
Urgency: If the VMail was marked as urgent (e.g., automatically if composed in EmComm mode), the notification appears with a red icon.
Rate Limit: These broadcast alerts are limited to once every 20 minutes per callsign to prevent congestion.
