Clio App Directory Edex Mail With Edex Mail, Clio customers can upload ANY document to be mailed via USPS first class! We offer Proof of Service for no additional cost, along with a simple online sign-up. The best part is that you’ll only be charged per transaction, there is no monthly fee! Key Features • Utilizing our CLIO integration, upload ANY document to be mailed via USPS first class. • Proof of Service add on available for no additional cost. • Online sign up. • Credit card charged per transaction. • No monthly fee. No commitment.