Send Email From Another Email Address
Send Email From Another Email Address
Either you are trying to send a New E-Mail or Reply / Forward an email
Click the drop down on From by your email address and click on Other Email Address
from the popped out Send From Other Email Address window, you can either click From... to take you into the global address list to find mailbox you are looking for or you can type in the email address you wish to send from and click OK
you can repeat this steps for as many email addresses you have access to send from.
You should now be able to select which email you want to send from in the From drop-down