---
title: "Campaigns | Castos"
canonical: https://castos.com/campaigns/
description: "Castos Campaigns lets you easily add pre-roll and post-roll audio to any of your existing episodes. Great for ads, promos, or announcements."
updated: 2026-05-07
source: rendered HTML, generated at build time
---

# 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→](https://app.castos.com/campaigns)

![Screenshots of Castos Campaigns overlaid showing pre and post-roll audio inserts](https://images-cdn.castos.com/2026/03/Campaigns-Hero.png)

## Castos is trusted by the top creators

![A selection of popular podcasts hosted on Castos](https://castos.com/images/podcast-social-proof.png)

## 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.

![The Castos Campaigns dashboard](https://images-cdn.castos.com/2026/03/image.png)

### 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.](https://castos.com/images/campaigns/leveda.jpg)

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.](https://castos.com/images/campaigns/danielle.jpg)

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.

1.  1
    
    ### Upload your audio
    
    Drop in your pre-roll or post-roll clip. Save it once, reuse it as often as you want.
    
2.  2
    
    ### Set the date range
    
    Choose start and end dates, then pick the shows or specific episodes the campaign runs across.
    
3.  3
    
    ### 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.

[Try Castos Campaigns→](https://app.castos.com/campaigns)