At 50 years, is email itself 'too old to learn?' Not even close, as this in-depth conversation with Aaron Smith reveals. Aaron and his company Sageflo are helping distributed brands get eye-popping results from email and SMS marketing by unleashing the power of local. Sageflo should be a Harvard Business School case study; as they pushed on from incubation within a top email-marketing agency to spinout to pivot, Aaron and his colleagues found traction in unlikely places. Aaron even shares a bit about the emotional side of shutting down a product — not an easy decision for a team! Sageflo is helping email learn a couple of unexpected new tricks. The core product helps distributed teams handle the tricky job of balancing centralized branding and localized email and SMS marketing — with eye-popping ROI. Sageflo's Archiver service complements that by saving every single email sent to every single customer — a lifesaver for call centers. Entrepreneurship is "hot" these days; this conversation is a great glimpse into the entrepreneurial journey. HBS, give Aaron Smith a call.