Contacts mailing list - on/off toggle for active clients?

We’re culling down our contacts list to get to a manageable number to send holiday cards.  There are any number of clients and contacts that should not be on the list for myriad reasons (deceased, difficult client, etc.).  These persons won’t get a card. 

Going through the downloaded client and contact list to pull these persons out has been a time sink for staff and attorneys.  I haven’t seen it, but outside of deleting a contact, is there some magic on/off toggle button somewhere in SB that we could check yes/no to keep said clients/contacts on a list for mailings?

Any help would be appreciated so we can avoid this comprehensive effort next year.

Thanks!

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Yes, @Roy Clifton I see I missed this Webinar from last month.  Has that been saved somewhere to watch? I haven’t found it.