Copilot Studio vs M365 Copilot App: grounding in Outlook emails

Hi,

I'm learning how to use Copilot Pro to program agents, both in the M365 Copilot app and the browser-based Copilot Studio. In the former, I can create agents that are grounded in my entire Outlook mailbox by going Agent > Configure > Knowledge > My emails.

However, in the browser-based Copilot Studio, when I create a new agent, I seem to be limited in what I can add as knowledge sources: no Outlook and also very limited Sharepoint functionalities (I cannot select it to ground in all Sharepoint sites that I have access to). The same goes for a topic: when I try to add a step of Generative Answers to my topic, I cannot add Outlook as knowledge.

This is really frustrating; I'm wondering if I am overlooking something, or in case this is not possible, if there is any news about this feature coming to Copilot Studio soon.

Many thanks in advance!