Find out how much space your email messages and attachments can occupy.
Your quota (storage) use is based on the size of the messages
and attachments in all of your mail folders.
Faculty are limited to 6GB of quota; Staff are limited to 3GB.
Quota increases can be requested subject to business need and
The default sending email attachment size limit for Exchange
mail is 150 MB. The default receiving email attachment size limit
for Exchange mail is 50 MB.