When should I send Black Friday emails?

As an e-commerce business owner preparing for Black Friday, I'm struggling to determine the optimal timing and frequency of my email marketing campaign. I want to maximize engagement without overwhelming my subscribers, and ensure I'm capturing potential customers at the right moment. My goal is to create a strategic email sequence that builds anticipation, drives sales, and provides value throughout the holiday shopping season without causing email fatigue or diminishing the impact of my core Black Friday promotions.