Step 1: Log in to Webmail.
Step 2: Click on the drop down arrow next to your email address (located at the right hand corner of webmail) and select Roundcube.
Step 3: Click on Settings.
Step 4: Under Settings, select Identities and choose on the email address you want to modify the display name.
Step 5: Enter the information in the Display Name field and click Save button.
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