There's a new daily RPG newsletter available, with a cleverly matched domain:
https://rpg.fyi/
(Scroll down to see earlier newsletter content.)
Although the thought of a daily newsletter fills me (not to mention my poor inbox) with dread, I must admit that the linked articles are well-picked...
A new gamemastering newsletter started last month:
https://dungeonmasterdaily.com/
This is a daily(!), brief mailing that promises to deliver short gaming tips, but its rather ambitious raison d'être seems to be listing all new gamemastering related content published on the Web on the...