Show breakdown of usage by each allowed email address
When adding/editing an allowed email address, you can choose which subaccount to attach usage to.
You can adjust the settings here: https://dashboard.clicksend.com/#/sms/settings/sms-allowed-addresses
All usage will be attached to the subaccount that you choose and can be viewed on the usage page here: https://dashboard.clicksend.com/#/account/subaccount
If you want a further breakdown, just create more subaccounts here and attach the allowed email addresses to those subaccounts here.