I need to draw on the vast experience available in this forum. The questions I have are:
Who uses targeted email marketing campaigns?
(Where the email marketing company supplies the targeted list of
double opt-in recipients and sends the email that you design.)
What companies would you recommend?
What level of success have you had?
and What volume of emails do you normally send?

I know a lot of people in this forum are against this type of marketing.
Research has shown that some companies use it to good effect.
I would be interested in what the people here in this forum think
about this type of marketing.