How to Send email from a Different email address in Outlook BTech BTech Alerts & Notifications - Check this page for the latest information on emergencies and system outages. All times are Pacific. Outlook Overview If granted send-as permission in addition to full access, follow the below to enable sending from the shared account. Steps to Perform From Outlook, start a new message Under the ‘Options’ tab, click the “From” button listed above the ‘Show Fields’ heading Now click the ‘From’ dropdown to the left of your email address and choose “Other Email Address…” Input the username of the additional mailbox Click OK If the account is valid, you will now have the option to send from that account.