Popup Opt-in Forms: Case Studies, WordPress Plugins, and Alternatives
Kikolani
MAY 28, 2013
How to Get 1000% Increase in Opt-ins Test Results (2008) – The test demonstrated that the time-delay hover box works, and it works best at 60 seconds. It works with Aweber , GetResponse, Mailchimp, Turbo AutoResponder, Google Feedburner, and other mailing list service providers. Popup Opt-In Form Case Studies.
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