I’d go with the hybrid approach: deeply research the 5 highest-value prospects, then use a lighter version of the same angle for the other 20–25. For the semi-personalized ones, I’d still check their website briefly so the message is relevant, but you don't need to spend 30 minutes researching each one or force a competitor's name into the subject line. The goal is to keep the core offer consistent while changing a few relevant details based on the prospect. For the tool, do you think GMass is enough for this volume, especially with follow-ups, or is there a specific reason you'd recommend Instantly?