We've been doing the simpler version of this for years now, basically stolen the idea from a 2007 MarketingSherpa article [1]: we just raise a modal window for

We've been doing the simpler version of this for years now, basically stolen the idea from a 2007 MarketingSherpa article [1]: we just raise a modal window for every subscriber address and ask something like "Please check again: is this your email address? - Yes / No (I want to correct it) (with the email address in big letters). Has worked wonders ever since ;) [1] http://www.marketingsherpa.com/content/?q=node/2223 http://www.marketingsherpa.com/content/?q=node/2223