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Deliverability Letter

List Growth Rate

Also known as: Email List Growth, Subscriber Growth Rate

The speed your email list grows or shrinks over time, shown as a percentage. It includes both new subscribers and people who leave, so you see your real list change.

List growth rate shows how fast your email list is changing. It looks at how many people join and how many leave in a set time period. You can measure it each month or quarter. The result is a percentage that shows if your list is growing or shrinking.

Tracking this number helps you spot problems early. If growth slows, you may need better signup offers or cleaner forms. If you see growth but low engagement, it can point to poor fit subscribers. Used well, it keeps your email program focused on healthy long term results.

A simple way to use it is to log your subscriber count at the start and end of each month. Note how many new subscribers you gained and how many unsubscribed or bounced. Then calculate the net change and compare it across a few months. This makes it easy to see if your changes to opt in forms or campaigns are working.