Hello Mastodon! We're PostboxMap, a free map of UK postboxes built by the people who spot them.
Most boxes carry the cypher of the monarch they were installed under, so a walk round the block can turn into a little history lesson. We map them, photograph them and log the ones we've visited.
If you're a spotter, walker, cyclist or local historian, come and say hello. Share your finds with us here too.
postboxmap.co.uk