When using the grails mail plugin, you can specify names for senders by using this syntax:
"Firstname Surname<address@domain.com>"
i.e,
mailService.sendMail({
to "somedude@gmail.com"
from "ali baba<fortythieves@arabia.com>"
subject "hi"
body "open sesame"
}
)
and it will show up in mailboxes as:

This allows us to show up in user mailboxes as a human readable name, instead of the typical noreply addresses.
You can even use it in config.groovy,
grails.mail.default.from = "ali baba<fortythieves@arabia.com>"