Dear Mrs. ______
You are a very special client to us.
And we sincerely apologize for not being able to stay in contact with you.
We are having a special offer this _____.
This offer is only for previous buyers like you.
We look forward to seeing you again,
Can you see applying this to your business?
What do you think can be improved and added to this?
Do you have other reactivation letters that you have used and have success with or failed and learned from?
To our business success!