I use tt-rss and the android app

shaarli bookmarks + hecat (shaarli_api importer + download_media/archive_webpages processors + html_table exporter for the HTML index)

https://www.sphinx-doc.org/ + https://pradyunsg.me/furo/ theme + https://myst-parser.readthedocs.io/ markdown parser + https://sphinx-design.readthedocs.io/ extensions.

Just drop all your markdown files in a directory and run sphinx-build. Highly customizable but also works out of the box

You just have to find the channel_id buried in the page source

I use this Firefox addon for that: https://addons.mozilla.org/en-US/firefox/addon/youtube-rss-finder/ - really useful

I wrote this ansible role to setup dovecot IMAP server. Once a year I move all mail from the previous year from various mailboxes to my dovecot server (using thunderbird).