I bought out a competitor who was an eBay Seller that has done over 240,000 transactions in the past couple of years. The list of email addresses, names, addresses, etc were acquired from this sellers PayPal transaction records. So, I have a list of roughly 240,000 people who have bought items between $1 USD and $400 USD. I want to utilize this list of people to build a list so that I can send offers to. How can I do this? Should I hire someone to send e-mails to people asking them to opt in to my list? Currently I'm using officeautopilote. Im worried that if I just send some random email saying "hey opt in to my list" -nobody would actually spend the time to click a link to opt in and I would be losing out on a way to make some decent money by promoting offers to my list. Should I send them an offer to enter to win a $100 eBay Giftcard? Would that be too spammy?