Email and SMS campaigns for a pressure washing company
Your past customer list is the cheapest work you will ever book, and most washers have never sent it anything. A driveway cleaned last April is dirty again this April. One text in March reading "your driveway is about twelve months old, want me to put you back on the schedule at last year's price" books jobs at a cost that rounds to nothing against $30 a call on Google.
Build the list from invoices, not guesses. Name, address, service, date, price. Then segment it. Roof customers hear from you every two to three years, house washes annually, commercial quarterly. Sending everyone the same message is why most of these campaigns get ignored.
The winter pre-sell is the other big one. A spring booking sold in January with a small deposit is work that will not evaporate the first warm week, when every washer in the county starts knocking on the same doors.