What 2M subscribers taught us
Theory versus what held up at scale
Placeholder section copy for "What 2M subscribers taught us." Most of what gets written about list growth is theory. This piece is about what actually held up at scale once a list crossed two million subscribers.
The three biggest surprises
It covers the three biggest surprises: how much engagement-based list pruning mattered for deliverability at high volume, why segmentation that felt like overkill early on became necessary later, and the complaint patterns that only show up at real scale.
What didn't change
It also covers what didn't change — the subject-line and send-time basics that worked at every size. Treat this as a working stand-in: the structure, length, and reading experience here are representative of the finished article. Swap it out with copy from the content desk whenever it's ready.
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