Newsletter Operator
Subscriber growth, sponsor income, and AI-assisted repurposing. Without spending half your week on tooling.
Beehiiv or KIT for sending, Castmagic for repurposing audio/video into content, Typefully for cross-posting drafts to social. Sparkloop for paid recommendations once you cross 5k subs.
A newsletter operator stack has to do four things: send, grow, monetize, and repurpose. Without becoming the operator's second job. The setup below assumes you publish once a week and want everything from idea to published email to sponsor invoice to run through tools that talk to each other.
Beehiiv is better for built-in monetization (sponsor marketplace, paid recommendations, premium subs). KIT is better when your business is products and the newsletter is the funnel. Both are fine. Pick one and don't overthink it.
Write the issue once. Use Typefully's AI to turn each section into a Twitter/LinkedIn thread. Schedule them around the send time. Free to start.
Drop in a podcast episode, founder interview, or Loom recording. Castmagic spits out timestamps, summaries, social posts, and full transcripts. Most of next week's issue is already there.
Above ~5k subs, Sparkloop's paid recommendations turn referrals into per-subscriber payouts. Below that, it's noise. Focus on writing.
Pick this if you ship weekly and want each issue to do double duty (newsletter + 3 social posts + a YouTube clip). Don't pick it if you publish daily (you'll outgrow Castmagic's pricing) or if your business is a paid SaaS (the newsletter is downstream of the product, use a simpler stack).