Open your customer list — whether it's a CRM, a spreadsheet, or a pile of old invoices. Count the customers you haven't heard from in 12+ months. Now multiply by your average job value. That number represents revenue that was once yours and could be again with a single message.
The average service business has 150–300 dormant contacts
Dormant doesn't mean gone — it means they've had no reason to reach out because the need hasn't come up yet, and you haven't reminded them you exist. A furnace customer from two years ago probably needs a seasonal check. A landscaping customer from last fall is probably thinking about spring work. The need exists — you're just not surfacing at the right moment.
The typical reactivation campaign yields 8–20% response
A well-segmented, personalized SMS or email reactivation campaign to past customers typically generates a 8–20% response rate — meaning 8–20 responses per 100 messages sent. On a list of 200, that's 16–40 responses. At a 50% conversion from response to booked job, that's 8–20 jobs from a single send. At $500 average, that's $4,000–$10,000 from one campaign to people who already know you.
This is not cold outreach
The key distinction: these are not cold leads. They're warm, previous customers. The response rates and conversion rates are significantly higher than any paid acquisition campaign. The cost is a fraction of a single Google Ads month. It is, objectively, the highest-ROI marketing a service business can do.