You do not have to be sending out 1000’s of leaflets to do this.
In fact you’re far better to work out how much money you can spend per customer (see marketing post about calculating cost) and then spend as much as you can on an idea that will really jump out when the recipient opens it. If you can be memorable (for the right reasons!) you’re halfway there.
If your spend allowance for a new client is £15, what can you send for £10 each to say 100 potentials on your list?
Use your imagination and create something that is really personal, that will have a real impact and get you a new client!