Add new audio to
old episodes.

Castos Campaigns inserts pre-roll and post-roll audio across your back catalog on a schedule you control. Run promos, swap sponsors, or announce events; without ever touching your original files.

Explore Castos Campaigns
Screenshots of Campaigns overlaid showing pre and post roll audio inserts.

Castos is trusted by the top creators

Promotion shouldn’t mean re-editing every episode.

Use your back catalog as live marketing real estate.

Add audio files anywhere

Pre-roll and post-roll clips apply across the episodes you choose. Your original files stay clean, and your downloads stay accurate.

Schedule by date range

Set a start and end date. Campaigns appear and disappear automatically. Pause, resume, or pull a campaign early…all from one screen.

Reuse clips across campaigns

Save audio for later. Bring back a sponsor, re-run a seasonal promo, or update a CTA across hundreds of episodes in seconds.

One Click Setup

Set up your first campaign in under five minutes.

Run promos across your entire catalog

Reach every listener, including the ones discovering old episodes today. Time-limited offers, event announcements, or sponsor reads all live in front of your full audience.

Free for all Castos customers

Campaigns is included on every paid Castos hosting plan. No add-ons, no extra fees, no caps on how many campaigns you can run.

One-screen dashboard, full control

Create, pause, resume, end early, or delete a campaign from a single view. No technical setup. No re-uploads. No waiting on a producer.

Works across multiple shows

Run a single campaign across one show, all your shows, or just specific episodes you choose. Perfect for networks, multi-podcast brands, and cross-promotion.

Testimonials

See What Our Customers Have To Say

I appreciate the easy monetization of podcasts through Castos, which allows me to make money right away. I find the setup process to be extremely easy.

Leveda M.

Castos is easy to use and makes uploading and sharing podcast episodes simple. I really like how it works with WordPress using their plugin.

Danielle G.

The ideal campaign workflow

How Castos Campaigns works

Set up a campaign across your entire back catalog in under five minutes.
As easy as 1-2-3.

Upload your audio

Drop in your pre-roll or post-roll clip. Save it once, reuse it as often as you want.

Set the date range

Choose start and end dates, then pick the shows or specific episodes the campaign runs across.

Hit publish

Your campaign goes live across every episode you selected. Pause, resume, or pull it whenever you want; no re-uploads.

Your back catalog can do more work than you think

Make sure it’s doing the right work. Run your first Castos Campaign in under five minutes.