Instead of the email being the session ID use different field

Hello, instead of the email being the session ID, can I have my client enter in a purchase order #?

The session ID is a built-in system data, so you cannot alter in the Continue Later feature.

An alternative workaround you can do is to customize the Email to include the data from the purchase order#.

Example:

By doing this, the client will be able to know what is the job order# in the continue later email.

I hope this help. Let us know if you need further assistance.