Overview
Substack lets creators publish articles, email newsletters, podcasts, videos, notes, and static pages from one publication. It supports free and paid subscriptions, trials, gifting, audience recommendations, referrals, analytics, comments, chat, direct messages, and native mobile apps. Its official feature guide describes automatic audio narration for written posts, AI-assisted clip generation for recorded streams, and other discovery and moderation systems that use ranking or semantic matching. Substack is a proprietary hosted service with export and import tools for publication data. Readers can follow publications through web and mobile apps.