Post Box 7 Post Office

I am not sure if it exists somewhere, but I did not find it and searching the forum just revealed something that I did not have in mind for a "Post Box"
There could be an NPC at Boston, who offers letterpaper for silver. Alternatively this might be a craftable item. (Paper industry, which enables to create books etc..)
The letterpaper can then be used [writing a message] and put in a postbox in Boston, or in any postbox which is constructable in the wilderness. Anybody could use a postbox in the wilderness to send letters. If you like to get messages, it is necessary to creaty a postbox on your claim. All letters sent to you can be retrieved by using the postbox on your claim. (alternatively, the postoffice in Boston will keep a letter box for you for a regular silver fee and you can collect your incoming letters there.
Sometimes I like to drop people a message when I pass a claim in the wilderness, but as we do not know who they are, it is difficult to do so. It would be nice to be able to drop a message at the claim, that can be read by the person only. And I do not want to build a sign every time. [However, I do not yet know, how this could be solved with the idea above]
The skill required would be literacy.
Price per paper 5s
Price for the Postoffice letter box 2s per day [like with the claim it has to be paid in advance and will be deducted continuesly]
A postbox will cost 2 copper,
There could be an NPC at Boston, who offers letterpaper for silver. Alternatively this might be a craftable item. (Paper industry, which enables to create books etc..)
The letterpaper can then be used [writing a message] and put in a postbox in Boston, or in any postbox which is constructable in the wilderness. Anybody could use a postbox in the wilderness to send letters. If you like to get messages, it is necessary to creaty a postbox on your claim. All letters sent to you can be retrieved by using the postbox on your claim. (alternatively, the postoffice in Boston will keep a letter box for you for a regular silver fee and you can collect your incoming letters there.
Sometimes I like to drop people a message when I pass a claim in the wilderness, but as we do not know who they are, it is difficult to do so. It would be nice to be able to drop a message at the claim, that can be read by the person only. And I do not want to build a sign every time. [However, I do not yet know, how this could be solved with the idea above]
The skill required would be literacy.
Price per paper 5s
Price for the Postoffice letter box 2s per day [like with the claim it has to be paid in advance and will be deducted continuesly]
A postbox will cost 2 copper,