Substack has been garnering a fair amount of attention by spearheading a new crowdfunding platform for creators. It has many people looking at email outreach for the first time. (And more than a few of us a dusting off newsletter mailing lists that we haven’t looked at in over a decade!) Some folks, like Marvel writer James Tynion IV, are seeing this as a complete replacement for social media. But they’re in for a big surprise.

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