What survives the filter
The metric switch nobody announced
Opener bloat is lying to you
Revenue up 50 percent, subscribers flat
Podcasts solved the metric email still fakes
The fastest way to grow revenue is emailing fewer people
The number that should scare every big list
Gmail grades your list in a week
The subscriber question almost nobody asks
Your acquisition channel is choosing your audience for you
Cost per engaged subscriber over time is the whole game
Your dashboard is lying. Here's the math.
