I've added a new feature to the Inboxes App website - a temp mail feature. This lets users to create temporary, one-time use emails that can be used for signups without having to share their primary address.
The main difference is that the extension allows you to keep your email for as long as you like, while this is another quick disposable email website feature.
The idea behind this is to increase dwell time on the site by providing something interactive. The (recent?) Google leaks suggest that having longer dwell time can signal that a website is relevant and useful. The hope here then is that by adding this it will boost SEO rankings over time as users spend more time using the disposable email feature. Hopefully this doesn't affect conversions from the website - but this is something I'm tracking :)