Hello @lokesh_segu
You can get the email id and use regex to identify that. You can use Ismatches activity.
Put the below expression in the expression field and input it as the email id. If any matches are found for xxx.com it will give output as “True”, then you can consider it as Approved. Else reject.
(?<=@)(.+?)(?:.xx\b)?(?:.[^.]+?)$