Inoreader has been my ‘go to’ RSS aggregator since Google shafted us by ‘deprecating’ Reader. I am paying for the Pro edition, too. One reason for going with premium is that the developers/support folk there are incredible. They get back quick when I have problems and they anticipate features I have only dreamed of–take Mail2Tag for example.
Here’s how I am using it. I gather all of my favorite newsletters and subscribe to them in a tag folder via the unique email address that inoreader provides for each tag. Create a tag in inoreader and inoreader creates a unique email address. Use the unique email address to subscribe to the newsletter. Click on the tag to access the newsletter. Get rid of all your email subscriptions. Use inoreader workflow to manage what you gather.
You can even create an “html clip” embed as seen below (no newsletters yet, won’t populate till the weekend):
You can also create an RSS feed to share as well: Newsletters2Die4 Kind of a meta newsletter of newsletters.