For newly subscribed podcasts where there there are a lot of older episodes to mark as already played then I suggest using the Multi Select feature which includes Select All Above / Below options which then allows you to mark them as read in one go.
For newly subscribed podcasts where there there are a lot of older episodes to mark as already played then I suggest using the Multi Select feature which includes Select All Above / Below options which then allows you to mark them as read in one go.