Hello {first_name},

I discovered a near unlimited source of [type of clients] that you can simply access and have them buying your [product or service] with some clever [client] messaging. 

You should know that your clientele are always in this space, and are looking for the right [deal] on services such as yours.

Do you want to tap into this source of new business? If so, just reply to this message and we’ll go from there. 

Best,

Name