Newsletter platform Substack raises $15.3M round led by a16z

INSUBCONTINENT EXCLUSIVE:
since added support for podcasts and discussion threads
The startup says that newsletters on the platform have now amassed a total of 50,000 paying subscribers (up from 25,000 in October), and
team
for whether the newsletter boom might eventually reach a saturation point, making it harder for new titles to find an audience, Best