If there are several E-Mail recipients, all recipients can be invited to a new appointment.
How to invite all E-Mail recipients to an appointment:
Select an E-Mail.
Click the More actions iconin the detail view.
Select Invite to appointment from the menu.
Complete the data for Creating an appointment.
Also see
Sharing E-Mails
Subscribing to E-Mail folders
Saving all recipients of an E-Mail as a distribution list
Parent topic: E-Mails within a team