The mailroom

Notes on mail that makes money.

Practical writing on direct-response mail, list strategy, and response math — from people who send campaigns, not just software.

Response math · Featured

The only direct mail metric that matters: value accepted per dollar mailed

Response rate tells you a letter got opened. It does not tell you whether to mail that list again. Here is the one-line formula we put at the top of every dashboard, why open-rate thinking fails for physical mail, and how to use it to reallocate a real budget.

Put it into practice

Reading about response rates is the slow way to get one.