Slow-cooker integration: See which accounts are no longer matching

I have a scheduled Salesforce integration job running. How can I see which accounts are no longer matching over time?

Ingredients:

• 1 custom date attribute / mapping added per integration job
• 1 account segment with segment trigger

Preparation:

1. Make sure all Salesforce jobs have setting to run a full sync and rebuild objects matching every night:
   
   
   
2. Within each job, add a mapping using the Function Editor to set a custom date attribute each time the job runs:
   
   
   
3. Validate the mapping and save the job. 
   
   
4. Create a new account segment with a filter for "Last Sync Date" attribute where date is over 1 day ago. 
   
   
   
5. Add a segment trigger to notify yourself via email anytime a new account enters this segment.