How do I redirect my Castos podcast feed?
After importing your podcast into Transistor, set up a 301 redirect on your old Castos feed so it points to your new Transistor feed. Your existing subscribers and podcast app listings then follow you automatically, so you don't lose anyone.
Export your Analytics
It’s a good idea to export any analytics for your podcast at this point. Analytics don't move between hosts, so it's good to keep a copy for your own records.
How to redirect your feed from Castos to Transistor
In Transistor, open your podcast, go to the Distribution tab and copy your new RSS feed from Your RSS Feed. You'll need it for the redirect.
For WordPress users, Castos recommends the following steps:
- Sign in to your WordPress Admin Dashboard
- Go to Podcasting > Settings > Feed Details
- If you have multiple podcasts, select the title of the podcast you'd like to redirect
- Check the box titled Redirect this feed to new URL
- Paste your new Transistor feed into the New podcast feed URL field.
- Click Save Settings
The redirect is now complete.
What if I have issues setting up the redirect?
If you have any issues with setting up a redirect using the Seriously Simple Podcasting plugin, you can still contact their support directly and ask for them with help enabling a 301 redirect.
Castos Support Email: hello@castos.com
You can use the following email template and add in your own podcast feed details:
I have moved my podcast to Transistor.fm. Please can you advise how to redirect my podcast called (insert podcast name) using (insert old Castos RSS feed) to my new host Transistor (insert new Transistor RSS feed).
Castos Support Details
What does a 301 redirect do?
A 301 redirect for your podcast RSS feed is very useful when you move to a new podcast host. It ensures that any subscriber or podcast platform still using your Castos feed won’t be faced with a broken link. Enabling a redirect means that your existing subscribers will stay subscribed and podcast directories can continue to pick up your new episodes.
A redirect is like leaving a forwarding address. It lets anyone using your old feed know where you have moved to.
How long does a 301 redirect last?
Almost all hosts keep the redirect in place permanently after you leave. With few exceptions, this is the industry standard.
How long does it take to enable a 301 redirect?
A redirect should be active within a couple of minutes of it being applied to your Castos feed. Podcast directories will then be able to pick up your new episodes from Transistor the next time they check your feed. That’s usually within 24 hours of your redirect being active.
How to test if a 301 redirect is working?
If you visit your Castos feed link in a browser, it should automatically redirect to your Transistor RSS feed.
What happens if I don’t forward my old feed from Castos?
If you choose not to redirect your podcast, you may need to complete a few extra steps.
Without a redirect existing subscribers won’t know where you have moved to. They will need to manually re-subscribe to your new Transistor podcast feed. So be prepared to share your new feed to win back your subscribers.
Without a redirect podcast directories like Apple and Spotify will still be using your old Castos feed. To fix that without a redirect you’ll need to manually go to those platforms and update the feed they are using for your podcast.
See:
Don't submit your podcast to the same apps again
If you have additional questions please reach out to us:
- Email - support@transistor.fm
- Live Chat: https://transistor.fm/contact/
Updated on: 08/11/2026
Thank you!