About display names
Note:
Depending on your messaging service plan, you might not be able to
add email addresses or set up a BlackBerry email address for your
BlackBerry smartphone.
You can use the Your name field to change the name that appears in the From field when you send email messages from your BlackBerry smartphone. For example, if your email address is justinjones@blackberry.com, you might type "Justin" in the Your name field. When someone receives an email message from you, that person can see that the message was sent from "Justin".
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