Yes, so long as your recipient is using Outlook 2016 or Outlook Web app

Microsoft has named their variant "Actionable Messages"; A recipient can either approve or reject (with comments) from directly inside the email message itself:

Approvers that are using earlier versions of Outlook will still receive the email - however, they will be directed to the Microsoft Flow site to action the request.

The following Microsoft blog post describes in more detail: Respond to your approvals from your inbox and Set an Approval Expiry

Yes, so long as your recipient is using Outlook 2016 or Outlook Web app

Microsoft has named this feature "Actionable Messages".

To implement this, you would add a "Start Content Approval" action in Flow, which will send out approval request emails. All recipients will receive an email that can be approved or rejected (with comments) without leaving Outlook:

Approvers that are using earlier versions of Outlook will still receive the email - however, they will be directed to the Microsoft Flow site to action the request.

The following Microsoft blog post describes in more detail: Respond to your approvals from your inbox and Set an Approval Expiry