This article describes how you can change the active Administrators for Mailissa.
For this documentation you need to have admin rights for your tenant in Mailissa. By default the first user to ever use Mailissa will have admin rights.
To change or add administrators you need to open the admin portal on https://portal.mailissa.com, login with your Microsoft user and switch to the tab License and User Mangement. Here you can choose which user should retrieve which license and who should have admin rights.
Please note, that only users who started Mailissa at least once, will appear in the registered users.
An user administrator can adjust the access to connectors for the tenant and hide connectors for separate M365 users and/or groups.
A tenant administrator will also be able create and update categories for Mailissa Team and Transfer.