Marketing Profs and Experian provided a free webinar (with registration) that discusses how to effectively manage email marketing frequency. MarketingProfs provides many valuable recorded webinars including several free ones at their seminar library page.
Some key takeaways from the webinar:
-Ecommerce spending for Q4 of 2011 was up 14 percent.
-Estimated $44.25 return for each dollar invested in email marketing.
-Email volume continues to increase.
-Subscription management tools have helped reduce unsubscribe rates.
-Birthday, anniversary, and thank you emails have significantly higher open rates and transaction rates.
-A browse campaign involves sending email marketing based on a visitors browsing activity and have higher open rates.
Creative Commons photo by Josh Hallett