SUMMARY: An opt-in list is the cornerstone of an email marketing strategy. But the pressure on marketers to do more with less in 2009 means that low-cost techniques to grow your house list will be paramount.
Here are 10 proven tactics culled from hundreds of past MarketingSherpa Case Studies to gather more opt-ins for your email marketing campaigns. Tactics include how to:
o Boost referrals
o Establish co-registration barters and other marketing partnerships
o Optimize your registration pages
o Use offline channels for email address collection