You can convert them to azw3 with calibre. It’s what I do.
Join me in the emoji shit post club!
Also I just realized my username looks extremely different on desktop vs mobile lmao. I just see the Android version.
Can confirm it works now (not sure when change happened; pretty sure I’ve been using since early 2022). I regularly use epub on kindle.
They did recently drop mobi (or at least threaten to - they send me an email saying they are going to drop mobi capability after I send one to my kindle).
Kindle supported file types: • .EPUB • .PDF • .RTF • .DOC, .DOCX • .HTML, .HTM • .JPG, .JPEG, .GIF, .PNG, .BMP