In a recent communication, Amazon has alerted Kindle users about significant changes set to take effect from next month. The notification pertains to the phasing out of support for sending MOBI (.mobi, .azw, .prc) files through the “Send to Kindle” feature, starting November 1, 2023. This change, as News18 pointed out, specifically impacts users attempting to send MOBI files via email and Kindle apps on iOS, Android, Windows, and Mac.
Sadly, KFX plugin does not work in Linux (it lacks Kindle Preview app)
How about using Bottles ?
Been meaning to, but havent try yet.
Still bit a noob, I am wondering if I should also install calibre through bottles (I imagine bottles sets up some sort of sandbox that only those installed through it can use its files).