I have a canned response for most recruiters when I'm not looking. But when a recruiter makes it clear they've actually paid attention -- a recent one was some

I have a canned response for most recruiters when I'm not looking. But when a recruiter makes it clear they've actually paid attention -- a recent one was someone who said they realised I probably wasn't ready to move on yet, having only been at my current job for ten months -- then I write a personal response and thank them for actually taking time, and send them a connection request. They'll be my first stops for job searches in the future.