Doggyloot is a website that helps pet owners buy gifts for their dogs during flash sales.
They did something truly remarkable: they began sending emails to dogs (rather than dog owners) on their birthdays.
The outcomes:
Average percentage of emails opened: 28.1%
Click-through rate: 750% above the group average
Daily Revenue Increase of 16%
Source: https://www.marketingsherpa.com/article/case-study/email-personalization-ctr-ecommerce-site