first of all dont use generic words ,
which shows totally robotic to your client ,
understand her/his business or needs ,
make data according it ,
search on every platforms about that person ,
use cloude for hidden knowledge ,
then go with step by step ,
some client close on day one ,
and other one close on next few months ,
it means you need different communication structures ,
and funnels which help your audience to come to words you ..
i hope it helps you ...