Using proton as well, but if you're stuck on the free tier you can't use any 3rd party email clients.
>YouTube
Using Google takeout for Youtube will give you a .csv of your subscriptions and playlists (just be sure to un-check getting a download of your videos). From there you can get the rss feeds and use RSSguard as a subscription viewer/media player, this site was a big help in figuring things out https://charlesthomas.dev/blog/converting-my-youtube-subscri....
>The only real trick is that most YouTube channels use a vanity URL and it’s more complicated to get the channel ID in those instances.
Go to the channel's videos page ( https://youtube.com/.../videos ) -> right-click -> View page source -> search for "rssUrl" . It'll look like https://www.youtube.com/feeds/videos.xml?channel_id=UC...
Bonus: Replace the "?channel_id=UC..." with "?playlist_id=UULF..." to get a feed without shorts and livestreams.
They should offer a lifetime option for the core service and monetize the add-ons and new features.
Personally I'm happy to pay proton a few bucks a month to not have to give up those things.
I'm not criticizing those that do, just that given my financial situation the trade off is simply not worth it.
Other services deprecate or get weird. Hopefully Proton keeps going in the good direction.