Startup Quote - Awesome founders provide wisdom about making things
LetterHunt - LetterHunt connects you to 10,000+ niche, active newsletter writers to promote your product.
Mattermark Daily - A curated newsletter of blog posts from investors & founders
Unzip.dev - Discover the latest developer trends
Snapstorms - An archive of advice from Mark Suster on Snapchat
Newsletter Operating System - All-in-one dashboard to launch & grow your newsletter