Once you have set up an e-mail address within your Green Hosting account you may log in to manage e-mail messages via webmail.
From here you can also change your e-mail password, set up forwarders and auto responders amongst other things.
Please note: If you change your e-mail password then this will also need to be updated in any other clients or devices you use to read your e-mails.
Log out of webmail after you have finished.
Other helps topic related to Logging in to e-mail through webmail