Monster.com is a leading online, job-hunting website. A person hunting a new job does not have to look at every listing on the website. He or she can type in a job description and monster.com will find all the matching jobs plus continue the search and e-mail any new relevant listings. Monster.com used ___________ to send its e-mail updates, which included ads from other businesses.
a) opt-out marketing
b) seller personalization
c) e-mail intermediation
d) e-mail facilitation
e) permission marketing
Answer: e