Mailbrew - Automated email digests from Twitter, Reddit, YouTube & more
LetterHunt - LetterHunt connects you to 10,000+ niche, active newsletter writers to promote your product.
Taco Digest - Customizable personal email newsletter created from your favorite sources.
Mattermark Daily - A curated newsletter of blog posts from investors & founders
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Dayblizz - Dayblizz is a social media app for creating, sharing and monetizing content