upgrade to Catalina stopped all attachments, email addresses, and url links from being sent.
All of this was possible prior to upgrading. Why the screw ups and what are the fixes? Second time an upgrade has done the same thing. [2 different iMacs] 27 inch iMac was purchased new in February 2019. Older iMac running High Sierra still functioning.
iMac 27", macOS 10.13