It’s Kate from Selzy here.

With Black Friday creeping closer, I've been thinking about flash sales — those beautiful, stressful 24-hour windows where everything moves fast.

But here's the thing: a poorly executed flash sale doesn't just underperform, it can actually damage your relationship with subscribers.

I used to think "more emails = more sales." So why not blast the entire list with daily promotions? Until unsubscribe rates spiked