Closing follow up after getting no response

Possible Subject Lines:

• Closing your file?
• Your file will be closed.
• Closing your account.
• Close out this account?

Body Copy:

Hey Niles,

We are in the process of closing files for the month. Typically when I haven’t heard back from someone it means they’re either really busy or aren’t interested.

If you aren’t interested, do I have your permission to close your file?

If you’re still interested, what do you recommend as a next step?

Thanks for your help.
-Neville