SentiSum - Read summaries of trending startup news
LetterHunt - LetterHunt connects you to 10,000+ niche, active newsletter writers to promote your product.
Unzip.dev - Discover the latest developer trends
Mattermark Daily - A curated newsletter of blog posts from investors & founders
Bit of News - Emails you daily summary of today's top news
Taco Digest - Customizable personal email newsletter created from your favorite sources.