From diagnostics to drug delivery to regenerative medicine, extracellular vesicles (EVs) are the messengers of the moment, offering a promising glimpse of future applications to the biologists who study them and the longevity experts interested in their powerful signaling properties. No EV-based therapeutic product has yet been formally approved for marketing, but clinical evidence is building around possible applications for EVs in the future – and their implications for longevity and regenerative medicine.