How can you clean up daily VMWare vSphere snapshots automatically?

you can run a script to cleanup; probably tweaking the script a bit if you like or as-is running weekly or daily in task scheduler
would need powercli installed

Creating, Listing and Removing VM Snapshots with PowerCLi and PowerShell

https://captainvops.com/2017/01/30/creating-listing-and-removing-vm-snapshots-with-powercli-and-powershell/

One step closer.  How do you tell it to run this daily or weekly and tell it to remove older than 8 days old?

not sure if there is a way to automatically do it by age but if you run it, say every sunday, it will delete all of the snapshots which would be from the previous 7 days

you would run it as a schedule task

Per our customer requirements, I need to keep 8 days of snaps, so I cannot delete all

Please note snapshots are not backups, and VMs are not designed to run on snapshots for longer than 72 hours.

Performance can also be affected, along with other related issues. (corruption!), storage space issues.

Do you not backup the VM every day for a restore ?

I would advise your Customer of these issues.

We are doing hourly backups and also daily VMWare snaps.  I will talk with the customer.