Podcast to Newsletter

Add your podcast episode to Castmagic — paste a link or upload the file — it transcribes in minutes. Then choose the newsletter preset (or your own prompt) and Castmagic drafts it from the recording, in your voice. Edit it, drop in your links, and publish. The whole loop takes a few minutes instead of an afternoon.

Yes — that's the point. Castmagic drafts from your actual words, and you can give it a custom prompt with your tone, structure, and rules (no hashtags, short sentences, your sign-off). Save it as a recurring prompt and every episode comes out on-brand. You stay the editor; it removes the blank page.

For a single recording, the Castmagic app is the fastest path. When you want to work across your entire library at once — a lead magnet from your best episodes, a book, a course — connect Castmagic to Claude with the MCP connector and Claude can search and build from every recording you have. See castmagic.io/claude.

Castmagic uses state-of-the-art speech models with 60+ languages, automatic language detection, and speaker labeling. Clear audio typically transcribes well above 95% accuracy, and a custom-vocabulary list keeps names, products, and jargon spelled right — so the content is built on a clean source.

Castmagic has a free tier so you can run a StreamYard recording through the full workflow and see the output. Higher volume — more recordings per week, longer files, and unlimited content generation — is on the paid plans.

By default you get a subject-line-ready hook, a short intro, the episode’s key takeaways, two or three pull-quotes lifted verbatim, and a closing call to action. It’s a starting structure, not a fixed template — adjust the prompt to match how your newsletter is laid out and it follows your format every time.

Yes. Castmagic gives you a clean, formatted draft you can paste straight into Beehiiv, Substack, ConvertKit/Kit, Mailchimp, or any editor — the structure holds up. We also have dedicated pages for turning a podcast into a Beehiiv newsletter and a Substack newsletter if that’s your platform.

Full-length episodes are fine — Castmagic handles multi-hour recordings, and longer conversations usually make richer issues because there’s more to pull from. A typical hour transcribes in a few minutes, with speaker labels and timestamps so the right quotes are easy to find.