Notify about Waiting Vmails (via Email) so the Destination will Retrieve Them

Isssue

Stations that don't use VarAC often, and they have Parked Vmails waiting that they don't collect. They never receive notification of vmails waiting, because they are not online!

Solution

1. Add a function to notify such stations via email, to encourage them to retrieve their messages.

2. After a configurable delay, or at configurable intervals, email them a summary of messages waiting, with basic header details (e.g., date, from, subject, urgency).

3. Exception: If a message is marked Urgent, then they should be notified as soon as possible.

4. I suggest to turn this feature ON by default.

5. The notification should be sent when the message is close to the destination in terms of connection hops. For example, if the message is waiting at a station that can hear or be heard by the destination, send email notifications. Then they can just go online at the appropriate time when there is propagation (or all day) to pick them up.

6. The method for achieving this shall not be based mainly on distance, as it must also work over HF and satellite, which has good connectivity to stations that are thousands of km away. Rather, it should be based on current beacons and heard history.

7. Note that for ultimate utility for portable/mobile stations, history should be geo-tagged with the location, as well as the station heard and the time and frequency. We need to know a grid or at least an area. For example, some vehicles such as planes and boats may cross to distant regions, so their location in the mesh network and who they can hear may change when they move far.

8. Geotagging shall to be handled differently for HF vs FM vs satellite. A. Satellite: All stations can hear each other. B. HF: Depends on propagation. C. FM: Depends on distance and direction etc.

9. Configuration of mobile vs fixed station. If the station is fixed, then there is NO need for all this complexity. However, it may still be desirable to geotag in the history, in case the fixed station later becomes portable or mobile. Consider for example, the home station, but they take the VarAC station computer out on Field Day or to operate POTA or SOTA.