How to Turn Your Substack Newsletter Into a Podcast (2026)

A large share of your Substack readers would listen if they could—on a commute, at the gym, while doing dishes. But recording, editing, and distributing audio for every issue is a second job most writers do not have time for. The good news: you can turn your Substack newsletter into a podcast automatically, so each issue becomes an episode in Spotify and Apple Podcasts without you touching a microphone.

This guide walks through the whole process with InkToAudio. The first episode is free, so you can hear your newsletter as audio before committing to anything.

What You Will Need

• A published Substack newsletter (any topic, any size)
• An InkToAudio account (the free tier covers your first episode)
• About 10 minutes for the one-time setup

Step 1: Generate Audio From Your Latest Issue

Open InkToAudio and create a new episode. You have three ways to get your Substack post in: paste the post text (or HTML) directly, use Import Content to pull the post in from its URL, or send a test email of the issue from Substack and forward it to your personal InkToAudio inbox address—the post lands in your account fully parsed, ready to work with. The platform applies AI script optimization to smooth out phrasing that reads well but sounds awkward spoken, and prepares it for rendering. This is also where you handle anything you do not want read aloud, like image captions or footers.

Step 2: Choose Your Voice

Pick a voice from the library, or clone your own so your podcast sounds like you. For a newsletter, your own voice is a powerful retention lever—readers who already know your writing connect faster to your actual voice than to a synthetic one. If your newsletter features interviews or dialogue, multi-speaker mode renders different voices for different speakers.

A Note on Authenticity

Cloning your voice is a one-time setup: record a short sample, train the model, and reuse it for every future episode. From then on, publishing audio in your own voice is as automatic as publishing the text.

Step 3: Render and Review

Render the episode and listen back. Because the script was optimized for speech, most issues sound clean on the first pass. Add an intro and outro if you want consistent branding—InkToAudio stores these assets so they apply to every future episode automatically.

Step 4: Get Your Podcast RSS Feed

This is the step that turns one audio file into an actual podcast. InkToAudio generates a podcast RSS feed and hosts your audio—no separate podcast host required. Set your show name, artwork, and description once. The feed updates itself every time you publish a new episode.

Step 5: Submit to Spotify and Apple Podcasts

Copy your InkToAudio feed URL and submit it to Spotify for Podcasters and Apple Podcasts Connect. Spotify usually lists shows within a few hours; Apple takes one to three days for first-time review. After that initial submission, every new issue you publish appears in both apps automatically—no resubmitting.

The same feed works for YouTube Music, Amazon Music, Pocket Casts, Overcast, and more. Each takes a couple of minutes and widens your reach with no extra content work.

Step 6: Add a Listen Button to Your Newsletter

Close the loop by embedding the InkToAudio player at the top of each Substack issue so readers can listen inline, and link to your podcast in your welcome email. You can also enable audio newsletter delivery so subscribers receive the audio directly. Now every reader chooses how they consume your work—read, listen on site, or listen in their podcast app.

Keeping It Automatic Going Forward

After the one-time setup, your recurring workflow is: publish your Substack issue, paste it into InkToAudio (or use the automated import), render, done. The episode flows to every directory and the player updates on your site. Listener analytics show you which issues earn the most plays and where listeners drop off, so you can refine length and structure over time.