Go to Analytics and click the Alias Performance tab. This shows a table with every alias on your account and its activity during the selected time range.
What the columns show
Alias — the alias address and its name.
Forwarded — number of emails forwarded through this alias in the selected period.
Blocked — number of emails blocked (alias was inactive when they arrived, or the sender was blocked).
Last activity — the last time an email was received on this alias.
What to use it for
Finding inactive aliases — sort by Last Activity or Forwarded to find aliases that haven't received email in a long time. These might be candidates for deletion to free up your alias count, or just good to know about.
Spotting your busiest aliases — sort by Forwarded descending to see which aliases get the most traffic. If a high-volume alias suddenly drops to zero, something may have changed — the site might have stopped using that email, or the alias might have been deactivated by accident.
Checking blocked counts — a high blocked number on an active alias could mean the alias was deactivated for a period, or that senders are being filtered.
Sorting
Click any column header to sort by that column. Click again to reverse the sort order.