You may be receiving an Offline Message email notification from email@example.com, which is the result of the Chat offline message being active on your account. If you are using the Web Widget to embed Chat on your page there is a hidden setting for "Offline Message" form that is allowing customers to submit these messages after-hours.
The Support Web Widget hides these settings when Chat is enabled in the widget settings, yet the offline message form is still active. You need to disable Chat in the Web Widget in order to see this setting.
Utilize the Web Widget to embed your Chat account
- Click the Admin icon () in the sidebar, then select Channels > Widget. You can then deselect the Chat toggle to turn off Chat functionality in your Web Widget.
- Click the Zendesk Products icon () in the top bar and select the Chat. Once in the Chat dashboard select Settings icon () > Widget > Forms > Offline Form. Deselect the offline form by changing the toggle to Off.
- Navigate back to the Support interface and click the Admin icon () in the sidebar, then select Channels > Widget. At this point you can re-enable Chat for the Widget.