I've been using NewsBlur since G killed Reader. Great service!
I have to confess: little automations like this with low barrier of entry is where I find most value in tech. Simple and practical.
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.
The "email digest" approach is basically DIY newsletter. While this approach works for me, it may not work well for others. YMMV.