et the url/link of the uploaded file by specifying the url within the <a href> tag, in the following format.  For example, in the sample message given below, File_Upload is the name of the file upload field, test is the application name and test_view is the view link name and the actual link is specified within single quotes.

on  add
    {
        on success
        {
            sendmail
            (
                To       :  zoho.loginuserid 
                From     :  zoho.adminuserid 
                Subject  :  "sending uploaded file links in email messages" 
                Message  : "<a href='https://creatorexport.zoho.com/DownloadFile.do?filepath=/" + input.File_Upload 
  + "&sharedBy=" + zoho.adminuser&appLinkName=test&viewLinkName=test_view+ "'>Uploaded File</a>"

            )
        }
    }