I would like to share with you checkout abandonment emails from 2 well known online retailers I recently came across.
In both examples below you will see different approaches. For those who would like to start capturing their checkout abandoners in real time then go to seewhy.com, which at the moment is the only provider of re-marketing solutions for checkout abandonment.
Just to remind you a/b testing, also referred to as landing page optimization, of your checkout process should be high on your wish list in order to achieve the best possibly result, as the reason why visitors abandon checkout process could also be somewhere in the checkout.
Headline: Regarding the items in your shopping cart.
Headline: Valued customer, you left something in your cart.
As far as I am aware cafepress.com has been using them for several months, however overstock.com I think started experimenting with them just now.