Notification for number of emails sent?

Dear Support, I am using latest WHM/Cpanel for sending the email and have configured below in the exim configuration. Basically, I have only a limit of sending 2000 emails per day and couple of time there are some users who sent lot of emails unintentionally or sometime because of application issues we sent lot of emails. Because of this, our email limit exhausted and we could not send more emails for that day. Hence, I need a suggestion from you that is there a way that I can get the notification if any user has sent 100 emails in a particular day or time so that I can trace that user and catch the problem on time. Please guide. Thank you so much. #smarthost_dkim: # driver = manualroute # domains = !"+local_domains +smart_hosts" # condition = "${if eq{${lookup{$sender_address_domain}partial-lsearch{/etc/staticroutes}{$value}}}{}{false}{true}}" # ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 : 16.254.84.641/32 # headers_add = "${perl{mailtrapheaders}}" # require_files = "+/var/cpanel/domain_keys/private/${sender_address_domain}" # transport = remote_smtp_smart_dkim # route_list = !+local_domains "${lookup{$sender_address_domain}partial-lsearch{/etc/staticroutes}}" #smarthost_regular: # driver = manualroute # domains = !"+local_domains +smart_hosts" # condition = "${if eq{${lookup{$sender_address_domain}partial-lsearch{/etc/staticroutes}{$value}}}{}{false}{true}}" # ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 : 16.254.84.641/32 # headers_add = "${perl{mailtrapheaders}}" # transport = remote_smtp_smart_regular # route_list = !+local_domains "${lookup{$sender_address_domain}partial-lsearch{/etc/staticroutes}}"