Expensify's CEO really does send out these exceptionally long and conversational marketing emails, apparently to anyone who ever used (or was required to use) their app. It's a somewhat charming approach in its own way, but the emails were quite frequent and not always that interesting so I unsubscribed.

However: because Expensify does have that habit, I don't think it's unreasonable that the poster just happened to receive this marketing email.