Hey there {First Name},
Hope you are doing well. I am writing this email to you after my conversation with {Name of person who referred them}.
I have a long history with {Name of the Person Who Referred To Them}. In college, we actually shared a room. He highlighted how {insert problem} has been causing some problems for your organisation. You're in luck because my business specialises in fixing that specific problem.
{Explain how you will resolve their particular issue}.
Let’s set up a meeting sometime this week to discuss further.
Regards,
{Your Name}