You can use three different methods to set the from line:

One word: this will be reformatted as <the word>@
For example: information will become information@
In most email programs this will show up as being from information@
Two or more words: this will be reformatted as the words you type <listmaster@>
For example: list information will become list information <listmaster@>
In most email programs this will show up as being from list information
Zero or more words and an email address: this will be reformatted as Words <emailaddress>
For example: My Name my@email.com will become My Name <my@email.com>
In most email programs this will show up as being from My Name