“We have a list of 250 to 300,000 people… we spent about $4,000 a month and send some millions of emails every month… it technically generates somewhere between 80 to $120,000 a month.”

A $4K/mo email list quietly prints $80–120K/mo in revenue

A 300K-subscriber email list costs about $4K/month to send and returns $80–120K/month in revenue — a 20–30× return. Owned email is the most reliable re-engagement channel; build the list early and treat it as the compounding asset, not a one-off broadcast.