Do all workflow approvals appear in Outlook?

Hi,

In the past I have used the FIM add-ins for Outlook to approve or reject Group Join Requests.

However, if someone changes their mobile number, for example, and this needs to be approved by their manager - does this request by default also appear in Outlook with the Approve/Reject button? If yes, do we also need to deploy FIM add-ins for Outlook?

Thanks,

SK