Subject: Closing the file
Hi there (name),
I am assuming since I haven't heard back from you, that (thing you were talking about) is no longer a priority/is now on the back burner/has taken a back seat to something more urgent. (pick one only)
If things change just let me know but in the meantime, I am going to go ahead and close your file and no longer follow up.
Be well.
Cheers,
Kim
