I agree with @ChrisAldrich about post kind plugins. Although I have more variants than the kinds provided, they offer a really good starting point.
Clint Lalonde Also wrote about the use of MailPoet To curate his newsletter. It doesn’t suit me at this point in time, but might suit you. Also, I think MailChimp allows you to collate via blog posts too? I assume that is what @dajbelshaw is doing with Thought Shrapnel.

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