Uninstallation
1. In Outlook 365, click the "Apps" icon, then navigate to the "Add apps" interface,
2. Click the "Manage your apps" button.
3. Search for "Maximizer", click on the three-dot menu icon, and select "Remove".
4. Restart Outlook for changes to take effect.
Alternatively, you can click on the “Apps” icon in your inbox interface to remove the desired app. It might be hidden behind the three-dot menu icon.
Then right-click on Maximizer icon and select "Uninstall" to uninstall the add-in from your Outlook.
Restart Outlook for changes to take effect.