What is the maximum message size and maximum attachment size?
- Each email is limited to 100 MB maximum
- If sending messages through Outlook for the web, each individual attachment has a 10 MB maximum, and messages are limited to a 25MB maximum
Need to send a file larger than the limits outlined above?
- Share the file via Box
- Share the file via OneDrive for Business
- Share the file via Teams
Return to Email and Calendars.
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Do I need Microsoft Office to use Office 365?
Since Office 365 is a web-based email and calendar solution, you are not required to have…
Finding the directory when emailing in Outlook for Mac
Select the New email button…
How are deleted items handled in Office 365?
When you delete an item from your mailbox in Office 365, it is moved to the…
How do I access a shared mailbox?
To access a shared mailbox via OWA…
How do I access my archive?
In Office 365, your mail will not be archived automatically…
How do I access my email folders in Outlook for the web (OWA)?
Login to OWA using your WUSTL Key at email.wustl.edu/mail…
How do I change my FERPA privacy settings?
For WUSTL Students, your FERPA privacy settings in WebSTAC determine whether or not your…
How do I connect my computer or mobile device to my Office 365 email account?
Setup Instructions can be found by visiting Email Client Setup…