Executives and thought leaders run on Castmagic to turn every podcast, panel, and interview into LinkedIn posts, articles, and quotes — a steady stream of thought leadership, in your voice, without the ghostwriter.
The executives and experts building authority run on Castmagic





Watch one recording become a week of content — press play, then click through everything it generates.
There’s one key to growing your newsletter in 2025 — and Flodesk CEO Martha Bitar nailed it: the “Human Touch.”
• Spark curiosity through storytelling
• Create an emotional connection
• Engage, don’t just inform
In a world of AI-generated content, being authentically human is your superpower. Prioritize a genuine relationship with your subscribers and you create unshakable loyalty.
Martha Bitar built Flodesk while working full-time.
Today it’s an 8-figure business — bootstrapped. Her story 🧵
1/ She saw a problem: email platforms were built 20 years ago for a different world.
2/ So she built one for modern creators — design-first, easy, beautiful.
3/ Growth took off virally. $30M ARR, all bootstrapped.
4/ Her advice: build your list now. Stay human. Engagement > size.
1. Build your list early
2. Offer a freebie
3. Segment your list
4. Nail the subject line
5. Hook with preview text
6. Optimize for design
7. Quality over quantity
• Your email list is the most valuable asset you own — start now.
• Lead with value: a freebie that solves a real problem.
• Segment from the beginning to send hyper-relevant content.
• A small, engaged list beats a large, unengaged one.
• Use AI to optimize — but never lose the human touch.
“Every year somebody says email is dead. But it remains — because it’s still the way we organically consume content.”
“I’d any day take a highly engaged small list over a large one that risks throwing me to spam.”
Bring in every podcast you guest on, every panel, every webinar, every fireside — upload the recording or paste a link. Castmagic transcribes it, so the conversations you already have become a content pipeline.
1,800+ sources Bring in any conversation from any platform — paste a link or upload.
Every interview becomes the posts you’d pay a ghostwriter to produce — a LinkedIn post, an X thread, an article, and quote cards — pulled from your own words, generated in minutes.
No ghostwriter Publish-ready thought leadership from your own words — not an agency retainer.
Build a template for each thing you publish — your LinkedIn format, your thread structure, your article voice — and Castmagic returns every draft sounding like you. Your POV, your phrasing, every time.
Upload a podcast, panel, or interview recording — or paste a link. Castmagic transcribes it in minutes.
LinkedIn posts, an X thread, an article, and quote cards — all in your voice, from one conversation.
Review, tweak, and publish — and turn every conversation you have into compounding authority.
Turn the podcasts and panels you already do into a steady stream of LinkedIn posts and articles.
Get publish-ready thought leadership from your own words — no agency retainer.
Templates and recurring prompts keep every post sounding like you, not generic AI.
Drop in a podcast, panel, webinar, or interview — or paste a link. Get LinkedIn posts, articles, and quotes in your voice, in minutes.
Import URL
Upload a recording
Click or drag your audio/video file here
MP3 · WAV · M4A · MP4 — up to 1GB
Built for privacy — your files are never used to train AI.
Castmagic — it turns the interviews, panels, and podcasts executives already do into LinkedIn posts, articles, and quotes in their own voice, so you build authority consistently without a ghostwriter.
A LinkedIn post, an X thread, a full article, quote cards, key takeaways, and a newsletter — a week of thought leadership from a single conversation.
Build a template and recurring prompts for each format, and every draft comes back in your voice, your POV, and your phrasing — pulled from your own words.
No — paste a link or upload a recording and Castmagic does the rest. Most executives are publishing their first posts within minutes.
Castmagic also works for