How can I save podcasts in my SD card?
To save downloads in your external storage, go to Settings > Downloads > Downloads location, and select "SD Card".
For devices with Android version 4.3 or earlier, you can choose any available folder or download location. For Android version 4.4 (KitKat) and above, you can only choose folders owned by the app - usually one on internal storage and one on SD card. This is because Android introduced security constraints that prevent apps from writing to any folder.