This information can be found by accessing the Managely menu.
Where do I go in Managely to find if customers sign up for access to the customer portal?
Click on the Setup button on the left-hand-side menu.
Click the Mail / Email Summary report underneath Utilities.
A filter for the Subject column can be used for ‘New User’.
The subject of the email received by customers is ‘New User Signup’.
For a more in-depth or a more granular result, a filter for the ‘Recipient’ column can be used with the customer’s email address.