Castmagic for Executives & Thought Leaders

Build your authority from the conversations you’re already having

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

1,800+import sources
10M+minutes processed
75k+creators & teams

Everything one interview becomes

Watch one recording become a week of content — press play, then click through everything it generates.

Uploading — How to Grow Your Newsletter, with Flodesk CEO Martha Bitar ✓ transcribed
interview 58 min
Transcript
  • 00:55 B Martha built Flodesk while working full-time at HoneyBook, and now leads a remote-first company serving creators and businesses worldwide. Martha, welcome to the show.
  • 03:04 M These platforms were created more than 20 years ago, and they solved problems from a very different world. Twenty years ago, just delivering an email to the inbox was a win. Today that’s commodity — the modern entrepreneur has very different needs.
  • 30:25 M Every year somebody says email is going away, email is dead. But it remains — because it’s still the way we organically consume content.
  • 55:01 M I would any day take a highly engaged small list over a large one that risks throwing me to spam. Quality over quantity — that’s what protects your reputation.
AI content from the same recording

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.

10 email tips every creator needs

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.

On email’s staying power 30:25

“Every year somebody says email is dead. But it remains — because it’s still the way we organically consume content.”

On list quality 55:01

“I’d any day take a highly engaged small list over a large one that risks throwing me to spam.”

Every interview becomes raw material

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.

  • Podcasts, panels, webinars & interviews
  • Upload a recording or paste a link
  • Transcribed and searchable in minutes
  • Every conversation in one place

1,800+ sources Bring in any conversation from any platform — paste a link or upload.

One conversation → a week of thought leadership

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.

  • LinkedIn posts and X threads
  • A full article and quote cards
  • Pulled from your own words
  • A week of posts from one conversation

No ghostwriter Publish-ready thought leadership from your own words — not an agency retainer.

In your voice, not generic AI

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.

  • A template per format you publish
  • LinkedIn posts, threads, articles, newsletters
  • Your POV and phrasing, every time
  • Recurring prompts keep it consistent

As simple as 1, 2, 3

  1. Drop in your interview

    Upload a podcast, panel, or interview recording — or paste a link. Castmagic transcribes it in minutes.

  2. Get a week of thought leadership

    LinkedIn posts, an X thread, an article, and quote cards — all in your voice, from one conversation.

  3. Post & build authority

    Review, tweak, and publish — and turn every conversation you have into compounding authority.

Why Castmagic is the best tool for executives and thought leaders

Import any interview — or upload a recording

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

Paste a link from: YouTube Spotify Apple Podcasts TikTok Reels X Google Drive Vimeo Twitch Reddit Loom Wistia

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.

Questions, answered

What’s the best AI tool for thought leadership content?

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.

What can one interview become?

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.

Will it sound like me or generic AI?

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.

Do I need to be technical?

No — paste a link or upload a recording and Castmagic does the rest. Most executives are publishing their first posts within minutes.

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