Whenever you send an email campaign in MailChimp, there are these little links in the footer for the forward-to-friend tool, unsubscribe link, update-my-preferences, etc.
Before, if your recipients hovered their mouse over those links, they’d see MailChimp’s domains (actually, we made them look pretty generic, like "foward-to-friend.com" or list-manage.com).
Some people told us they were too generic, and some others (really paranoid people) told us they looked a little suspicious. Good point. So we changed them to automatically include your own company name in front, as a subdomain. It’s a nice little touch to help make your emails look even more professional and trustworthy.