Improved
Clicking the email address opens the compose window. At the top of the contact page, clicking the email address starts a new message in Univents — with the contact already set as the recipient. If your mailbox is connected, the message is sent through it; otherwise via the Univents sender.
Clicking the phone number starts a call. The number opens your phone app (e.g. FaceTime, Teams, or your phone system), just like phone links on websites.
Clickable in the master data card too. In the overview card at the bottom of the contact page, email and phone number are linked as well.