On a sidenote, this type of spam marketing doesn't work in the read world, either.
Today, I received a plea from a gentleman who used LinkedIn's messaging system to spam his closest however-many-hundred-closest-friends. He says he needs me to buy his book at Amazon, and wants me spread the word to as many people as possible, because he's gotten himself $800,000 in debt due to falling prey to a scam that originated in the Middle East (I assume it's one of those scams offering you a big cut of a $20 million ill-gotten fortune from a corrupt politician, if only you'll front a few hundred thousand dollars in goodwill money).
He said if he can sell 500,000 copies, it'll get him out of his mess. Seriously. Yeah, okay. We've all made mistakes in the past, but that doesn't give us permission to make a bigger marketing mistake, which is to send out unsolicited bulk emails. Unless someone has given you permission to send them a bulk email (such as them requesting to be added to your mailing list for fans), don't send the email.
Your immediate family and closest true friends will put up with an unsolicited bulk email, but the rest of the world will not. Almost every day I receive bulk email solitications from authors, simply because I'm in their address book because I responded to an email months or years ago, or I agreed to connect to them on LinkedIn or Facebook. When I receive these bulk solicitations, I unfriend these people from my connections, or I'll politely ask them to remove me from all future communications.
It saddens me to see such emails, especially the case of the man above we'll call Mr. Pickle. I'm going to remember him and his book for the wrong reasons. The author is the brand, and this type of email is not good brand-building. I've noticed a marked increase in such emails originating from my connections on LinkedIn.
If you face the same issue, LinkedIn makes it easy to remove these people from your connections. Here's how: Log into LinkedIn, click connections, then click the link at right that says "remove connections," then click the checkbox of the user and click remove. If someone's spamming you on Facebook, like tagging you in posts for which you have no connection, or posting spam on your wall, it's easy to unfriend them. Click to their Facebook page, and float your mouse over the box that shows a checkmark and the word "Friends," and then click the "unfriend" option that pops up below.
Speaking of spam, almost every day I receive spam emails offering to sell me access to huge mailing lists of hundreds of thousands of people, sometimes over a million people, for as little as a couple hundred dollars, or less. All these emails claim they're "100%-opt in," but 99.99999% of the time, they're not.
They're spam lists. They're scams. I've seen multiple authors fall for these scams in the past. Please don't. Some have even complained to us, "I sent out a million emails, I got 900 page views at Smashwords, but not a single sample download or sale. What's wrong?"
Spam doesn't work. It's a sucker's bet. There are no easy shortcuts to book selling. It's incredibly tough, hard work. Realize that most books don't sell well. Focus your attention on your craft, and on producing books that are as good or better than what the big NY publishers are putting out. Give readers great, professional-looking book covers. Price your books competitively. Study the best practices in The Secrets to Ebook Publishing Success. Then get to work writing the next book. The best marketing you can do for you book is to write a book that markets itself on the wings of reader word of mouth.