Here's how to disable the chatbox read marker:
Go to your Crisp dashboard
In the sidebar, click on the Settings icon
In the Settings, select Websites, and then pick your website
In your Website, click on "Chatbox & Emails settings"
Click on "Chatbox Behavior"
Enable the "Operator privacy mode" option
Now, your visitors won't see the message "read" marker again (you may disable this option anytime to get back to default settings).
Published on: 16 / 11 / 2017