When it gets to emails, the impression you make – on your customers, readers, clients, friends etc – dictates whether your email(s) will be read or not. One way of doing that is by carefully choosing the “from” name that won’t stir resentment. Otherwise, your open rates may take a nosedive.
There are many other reasons though why someone would want to make the changes.
This post discusses what happens when you send your email and how to change your email name.