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Re:Ask HN: How do services like Substack and Beehiiv send em... by boeing767 on Saturday April 15, 2023 @04:21AM (#35578710)
Oh, seems strange for them not to spin up their own mail-sending server.

Why not do that?

They're funded to the gills.

Re:Ask HN: How do services like Substack and Beehiiv send em... by geoah on Saturday April 15, 2023 @04:37AM (#35578772)
Their business is not sending emails, and until it becomes cheaper for them to DIY it most companies will outsource stuff that doesn't give them a competitive advantage.