Missing Email service in Addthis plugin?

When you use Addthis.com’s share plugin and you are wondering why the email service won’t show up in the share options, here’s what I did wrong:

Apparently the email service needs the “username” parameter to be set. Normally when you generate the addthis code by clicking the button on their site, the username will be a parameter in the URL to the javascript. While I was tempering their code the adjust it to my needs, I somehow lost the username. That made the email service disappear in the addthis layer. As soon as I added the username to the plugin’s setting variable “addthis_config” the email option reappeared.