The past few days, it seems when I use the Firefox or Chrome extension to push a page to Kindle, it may take several hours for the document to show up on my Amazon account.
I tried emailing a PDF directly from a personal email address to my Amazon kindle address and it showed up within a few minutes, so it seems like the latency might be on the fivefilters.org email side based on this experiment.
I haven’t changed any settings recently.
Thanks. Love the extension.