Uninstalling or temporary disabling Internal Mail Protection (IMP) requires global or domain admin rights for the tenant where IMP is installed.
First confirm that IMP is installed for the team by going to the Admin Center → Summary → Product Features:
In a fresh incognito browser, go to https://tools.inkyphishfence.com and login as the admin for the tenant:
When prompted, click Continue:
Consent to PowerShell Permissions:
Click Accept and then Continue:
This will bring you to the INKY tools site, click on Features on the top right:
The features you currently have installed are checked
Uncheck the feature you would like to disable, in this example it is Internal Mail → Click Modify Optional Features
An uninstaller will run:
Confirmation of a successful uninstall: