https://github.com/skx/rss2email/
I never got the hang of using a browser to read feeds, email suits me much more naturally.
Funny enough, it has the exact opposite feature of this submission and I love it. Email newsletters via rss reader.
I use email basically as a todo list, so emails that aren't very important (e.g. newsletters) get pushed out of my inbox quickly. This always have me an uneasy feeling, as I frequently felt rushed to read newsletters when I got them, which I never loved.
Now I can just check newsblur every few days/once a week, and I can read newsletters and whatever else when I'm in the mood!
It's different to others in that it only shows items from the currently served rss feed file i.e. there's no item history.
It's like this, because I don't want the pressure of unread items clocking up, knowing I'll never get to reading them.
It is frontend SPA that works without a backend. It works better with a opt-in backend.