publishing▌

Search Substack for newsletters / publications matching a topic, keyword, category, language, or author and return matching publications with subscriber-tier signals, multi-currency pricing, recent post samples, and canonical URLs as structured JSON. Read-only.

Take one piece of source copy and produce platform-tailored variants (length, truncation-safe lead, hashtags, line breaks) for Facebook, Instagram, X, TikTok, YouTube, Threads, Bluesky, Pinterest, LinkedIn, Google Business, and Mastodon — then publish through BulkPublish's Multi-Platform Composer.