Mailing Tips:

If you would like to send something to the hiker. I recommend mailing two weeks before the planned arrival date. Add time to this two weeks if you live further from the trail. This will allow ample shipping time as well as a few buffer days in the schedule. Some places don't like to hold mail for longer then necessary.

If you are mailing in advance of two weeks to a place of business other than a Post Office, I would confirm it with the receiver first. Space is often limited.

It's also a good idea to let the hiker know ahead of time what you sent them, a letter or package. Often the letters and packages are not in the same place. If the hiker isn't expecting it and doesn't ask, the item may get overlooked.