The 48-Hour Rule

Follow up within 48 hours while the memory is fresh. Reference something specific from your conversation to trigger their recall — because after day three, your name and the next five names they met that week blur into a single unidentifiable group nobody follows up with at all.

"Great talking about [specific topic] yesterday. Here's that [article/resource] I mentioned." Specificity proves you were truly listening, and it is far more persuasive than any generic compliment you could send instead.