Abandon cart emails. A great tool to capture those users that abandon your checkout process, send them an email to the effect of "whoops, looks like you left something in your basket, click here to continue buying...", and voila, an extra conversion (hopefully).
To effectively capture these people that leave your checkout process, let's say on the delivery page, you need to have their email address (And ask their permission but we'll park that for now).
How do you get their email address for the abandon cart email to be sent?
Same question, but how do you get their email address in a log-in free checkout? Eg. www.asos.com (where it says "continue" for new customers)? My manager has recommended instead of having "continue" have "email address" - but this isn't a true log in free checkout is it? Would you still consider it a barrier?