One fast way to begin to build your email list is to export your LinkedIn contacts into excel. You can then import them to an email marketing provider like MailChimp. In this vid, I'll show you how to do it!
The #1 thing that you should do before you launch a campaign on Kickstarter or Indiegogo is build an email list. This advice also applies to launching any other kind of product. You need an email list.
I'll show you how to get started building your email list with LinkedIn so that you can start getting sales on day 1 of your product launch.
ALSO!!! As a warning, it's not best marketing practice to import subscribers without opt-ins.
I'd recommend making it very clear how people can opt out of the list, or else ya gonna get in trouble and might have your account suspended.
Other email marketing tools:
Yesware: http://www.yesware.com/
Boomerang (individual): http://www.boomeranggmail.com/
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Sal