If you wish to change your OX Webmail Name / Alias then please follow this guide.
1: In OX Webmail , click on the Top right circle with two letters in the top right hand corner of the screen. Then select " Edit Personal Data ".
2: Change the First name and Last name to what you desire to appear when sending an email.
3: Press Save.
6. Congratulations! You have now successfully changed your Mailbox name alias.