Here's how it works: choose a username when you sign up for mlist and use it like an email address (username@mlist.io) when subscribing to newsletters. The newsletters are delivered right to the app. No more overflowing email inboxes!
Check out the website (http://mlist.io) or download the iOS app (https://geo.itunes.apple.com/us/app/mlist-better-way-to-read-email/id987277316?mt=8)
I'm open to any feedback and happy to answer any questions!