Clinique Cosmetics has a database of more than 600,000 people who have registered to receive product updates via e-mail. To register, customers have to fill out a brief survey. When Clinique introduced its Anti-Aging Serum, it sent e-mails to all women over 35 who had listed that they were worried about wrinkles. Eight percent of the women who received the e-mail purchased the new product. Clinique used __________ to introduce its new product.
a) opt-out marketing
b) seller personalization
c) e-mail intermediation
d) e-mail facilitation
e) permission marketing
Answer: e