I have a workflow that emails update requests to clients if the file is of a certain age. I am using a try-catch as sometimes, these files do not have a value in the email metadata field. 

This try-catch will email the manager the file# so that it can be updated and have an email sent the next time the workflow runs.

This works fine but sometimes, a file (that has an email value in the metadata) will get caught in the try-catch and be sent to the manager which is not true.

I noticed in my try-catch, it is set to all errors and may be the source of my issue. The file may have had some error but a missing email address is not one of them. 

Is there a way to have it catch ONLY the files where the email value is is blank?