Change email address for user in WSO2 Identity Server

Overview

Sometimes users need to log in using their email address as username but they need to change their email address and log in user new email address. With WSO2 identity Server 5.0.0 there is no direct way to update email address when you use email address as username.  Because chaging the username (uid) in WSO2 IS 5.0.0 is not recommended due to several limitations. This blog post provide workaround for change email address and log in using your new email address.