Configure File Server Resource Manager with e-mail notification
Add feature: SMTP server
Configure SMTP server
SMTP Virtual Server Properties
Access Tab--Relay

Delivery Tab


File Server Resource Manager--configure Options

dsmod user "cn=jeff,dc=test,dc=com" -email jeff@vanarts.com
dsmod user "cn=chris,dc=test,dc=com" -email chris@vanarts.com
mkdir c:\share
Customize the security for c:\share folder

dsmod group "CN=Print Operators,cn=builtin,dc=test,dc=com" -addmbr "cn=jeff, dc=test,dc=com"
dsmod group "CN=Print Operators,cn=builtin,dc=test,dc=com" -addmbr "cn=chris, dc=test,dc=com"
runas /user:test\jeff cmd
mkdir c:\share\jeff
runas /user:test\chris cmd
mkdir c:\share\chris
icacls c:\share\jeff
c:\share\jeff NT AUTHORITY\SYSTEM:(I)(OI)(CI)(F)
BUILTIN\Administrators:(I)(OI)(CI)(F)
TEST\Jeff:(I)(F)
CREATOR OWNER:(I)(OI)(CI)(IO)(F)
Successfully processed 1 files; Failed processing 0 files
icacls c:\share\chris
c:\share\chris NT AUTHORITY\SYSTEM:(I)(OI)(CI)(F)
BUILTIN\Administrators:(I)(OI)(CI)(F)
TEST\chris:(I)(F)
CREATOR OWNER:(I)(OI)(CI)(IO)(F)
Successfully processed 1 files; Failed processing 0 files
Create quota entries

Share the c:\share folder
From client computer, login as jeff and map a drive z: to \\DC1.test.com\share\jeff
Runas administrator and create a file
fsutil file createnew z:\file1.txt 190000000
copy it to the z: drive
Jeff@vanarts.com will receive a notification email.
Using the File Server Resource Manager to manage the quota needs more steps than "Enable Quota Management" by Windows Explorer for multiple users. However, it includes the email notification.
Configure Disk Quota using Windows Explorer

The quota limit applies to all users. For exception, you must click "Quota Entries" button. There is no email notification.
It only applies to volumes.