Free tools to aggregate RSS feeds/news sites into daily digests for your Kindle

[Guthers]

I've been searching for online tools/sites to do this for a while recently. Note; I don't mean using Calibre to do it and sideloading (or emailing) into your Kindle. I mean services that will allow configurable news digests to be set up online and emailed direct to your Kindle without any other intervention. It looks like there used to be quite a few services like this but most are now dead. Of those that remain, most charge a fee of some sort. I have however found a couple that are currently free:-

Zenreads : Easy and simple to use but only has a limited selection of sites that you have to choose from.
Keendly + Inoreader : Some of the kinks are still being worked out of Keendly - but it works!

If anyone knows of more, please shout!