Question: what is the difference between o365 e1 and e3?
Answer: The Office 365 E1 version is focussed on the Online version only. So you get Word, Excel, Outlook and Onenote, but only the web version of it. ... The E3 version comes with a full license to install the desktop version of Word, Excel, Outlook, Onenote and Publisher on your Windows computer or Mac.