Tool/API to find local OSM mailing lists by location.
https://local.openstreetmap.directory/
The web interface handles searching by place name or lat/lon, the API can be queried by place name, lat/lon and OSM object.
This is a proof of concept, I threw it together to see if it useful.
Systems for organising remote mapathons, like missing maps, could use the API to look up the local mailing list and remind the organiser to contact the local community to let them know about the mapathon.
An assisted editing tool like MapRoulette might show details of the local mailing list so mappers know how to contact if they're making a complex edit and they want to check with the local community that the edit is correct.
Here are some example queries and the result:
Cuba: Talk-cu
Rome: Talk-it-lazio
Burkina Faso: Talk-bf
Oxford: Talk-gb-oxoncotswolds
Timbuktu: Talk-ml
47.6,-122.3: Talk-us-pugetsound
The heavy lifting is done via the Nominatim API. For every lookup it issues a query to Nominatim and uses the address information to determine the local mailing list.
The algorithm for finding mailing lists is in localosm/lists.py