All Ably users can manage their email preferences, including account quota and limit notifications from within their account dashboard.  

To change your email settings:

1. Login

Click the login link in the top right of the header navigation to open up the login dialog box and enter your login details

2. Once logged in successfully, you will be taken to your account dashboard page which will list your apps within your account.

3. Click on your Account name in the top right (in the screenshot above it's Ably), and click "My settings" beneath your email address.

Related reading

Change your email preferences, and click "Update email settings".