1) Download the EPUB format. (If it's an Open EPUB, send it to kindle and skip the rest)
2) It's usually via Adobe Digital Editions. The library gives you a .acsm file, and ADE then downloads the actual EPUB.
3) ADE EPUBs are DRM-protected and not compatible with kindles. I add the book to my Calibre library, with the DeDRM plugin to remove the DRM. https://thecodeshewrites.com/2025/02/25/how-to-remove-drm-from-amazon-kindle-adobe-ade-ebooks-for-free/
4) Send the EPUB to kindle! (no longer need to convert to .mobi)
