Email might seem quaint compared to other forms of social media, but it’s not going away any time soon: services like Gmail and Outlook have simply added social layers and kept on trucking.

This handy chart shows how to build a newsletter that your subscribers will be glad they opened, whether they’re on their desktops or using a mobile device.Thanks to Email Monks for the tips.

P.S. We can’t decide if we’re afraid of the angel or totally obsessed with it. What do you think?