I'm running macOS Catalina 10.15.3
I'm having tribe using Time Machine, with both mail and contacts.
When I open mail or contacts, (separately of course) then open Time machine to find an old deleted email or contact mail quits or contacts quits (whichever one is open) I'm using a LaCie 2 TB separate backup disc. Apple have not been helpful, even though it's been escalated a couple of times.
Time Machine seems to work with other saved data. Any help please.