Final follow-up after four ignored emails

The message

Hi [first name],

I've sent four emails and haven't heard back, so I'm assuming this isn't a priority right now. That's completely fine.

I'm closing the file so I stop cluttering your inbox. If it comes back around this year, reply to this and I'll pick it up where we left off.

Good luck with the launch.

[your name]

Would you reply to this?