[Fogest]

I use a self-hosted RSS reader, I'm curious if you could use something like that and have some email digests generated from that. I know tt-rss supports sending email digests. You could set it up to check sites on a less frequent schedule and then the setup sounds just like what you're talking about.

You may be fine with your solution so this comment is more geared towards others who are interested in a similar solution.

I am sure managed RSS platforms also offer some kind of email digest if you don't want to self-host.

[wiw2]

Absolutely. There's more than one way to skin a cat.

The "email digest" approach is basically DIY newsletter. While this approach works for me, it may not work well for others. YMMV.