Sources: Facebook is developing newsletter tools for journalists and writers, including tools to help build followers, curate email lists, and offer paid subs (Mike Isaac/New York Times)

Mike Isaac / New York Times:
Sources: Facebook is developing newsletter tools for journalists and writers, including tools to help build followers, curate email lists, and offer paid subs  —  Facebook is working on newsletter tools for journalists and writers, according to three people familiar with the company's plans …