It only allows 1 delivery of email at a future date, but no recurrence option allowed (call it Outlook 2021 limitation.Have any of you found an elegant way, preferably an unpaid one to send these reminders?  

In that case and others we have had FHA allowed an exception until the lease expired, then the buyer must occupy. 

I forget the number right now but if you are within I think 5 days from sale date the lender isn't obligated to reinstate, but still may.You may be able to delay the foreclosure by simply asking for more time, you are now the property owner and have some sway.A couple observations:You don't have title insurance as no title company will insure a trustee's deed in CA, so that won't help you.You won the auction based on your commitment to occupy the property (SB1079), so this is not a quick flip.To buy time and delay foreclosure you can file a stripped down bankruptcy.You can't stop payment on the 86k wining bid since you paid cash at the trustee sale.Generally trustee sale buyers don't have a real good feeling for the property condition, unless you do for some reason, so this is a wild card. 

Make sure to have dates, descriptions, and amounts. 

Is it possible to purchase a home from someone, and give them the first right of refusal to buy it back at a specific price at a later date?

When we're 60 days out from the lease termination date, I send the tenant an email / letter asking if they intend to renew.

This notice contains the homeowner's name, auction date and in some cases a description of the property/principal loan balance. 

Should we be doing this HELOC if we are unable to pay it back in full at a later date. 

At one point I even tried working with the tenant to see if a different due date would help based on when he was getting paid, but he said he was fine and his new job would help him get ahead.

Quote from @Donna Brake: Start the eviction process on the earliest date allowed by the law and your lease.