Hi
I'm trying to create automation what check is e-mail sender exist in jira as customer or not.
into jira service management come in e-mail where in description is end user name and e-mail address. i extract from e-mail Reporter e-mail address to customfield.
Now i like to check with jira automation is this e-mail reporter allready in JSM or not. To create new it is simple with automation.

but how i should write If matches when i need to check that customer.x@mail.com is allready in customers or not. if exist, then don't create new but if don't create new customer and set it as Reporter.