You can buy Office for personal computers and Windows tablets the traditional way, by paying for the software just once. For $140, you get Word, Excel, PowerPoint and OneNote. Comparatively, an Office 365 subscription costs $70 a year for one user, so by year three the subscription is costing you more.What is an Office 365 email address?
A primary email address in Office 365 is usually the email address a user was assigned when their Office 365 was created. When the user sends email to someone else, their primary email address is what typically appears in the From field in email apps.