Hi all, I've noticed a lot of people have been looking for McDonald's mail address.
They haven't got one that they give out, but someone has told me about a CGI form that you can fill in that can be found at http://www.mcdonalds.com/corporate/info/faq/comments/other/other_form.html.
It's worth noting that they only want email from you if you live in the US or are writing about US stores, but...if you want to tell McDonald's what you really think about them, try filling out one of their forms.
(They also may use or alter your comments to suit their own purposes; they say so in their Terms and Conditions)
Go for it! McDonald's would just looove to hear from you!