All HTML tags/codes are allowed in Podbean Paid accounts. It is easy to embed your HTML content into your post in 2 steps.
1. Check on the html model by clicking the html icon on the upper side of the edit section.
Check off the option "auto-fixing html" before pasting the HTML code. If this option is checked on, it may auto filter and remove some codes you added.
2. Copy and paste the HTML into the post.