Office 365 includes Outlook Web App so you can get to your email whenever you are online, even if you are away from your desk or using your mobile phone or tablet. To get to Outlook Web App, sign in to Office 365, then at the top of the page click Outlook, Calendar, or People.
In Outlook Web App, you can:
Send and receive mail
Create appointments and reminders
Add Lync meeting information to a meeting invitation
Set up Outlook or other email programs to access your Office 365 email, calendar, and contacts
Import email and contacts from your old accounts