This mod was commissioned to me earlier this year, and I've gotten the express wish for it to be released as open source after some time of exclusive availability to the PVEpLands server. To my knowledge, it has easily become one of the most appreciated convenience mods.
Key features:
Craft recall runes and mark a location on it, and recall to it.
Several config options allow it to be an easily accessible, an end-game feature, or something inbetween.
Config can be reloaded during server runtime without restarting.
Download: https://github.com/dmon82/MarkAndRecall/releases
For the not-so-adventurous, here are the mod and config details: