I want to send
a PDF to my Kindle 11th Gen. I downloaded it, added it to my Calibre library, selected it, and tried to "Email to [my kindle]". It said, "Convert to EPUB?" I said, "No, I tried that and the text comes out terribly." It didn't send. It did not even start a job. I added PDF to the list of accepted formats for "[my kindle]@kindle.com" in the email preferences. I tried, "Email to [my kindle]." It froze. I forced the program to quit. I have repeated this enough times to confirm it is not a fluke.
What can I do? (Other than physically plug my kindle into my computer.)