(QUOTE) We can't provide service under the Gmail name in Germany; we're called Google Mail here instead.
If you're traveling in Germany, you can access your mail at http://mail.google.com.
Oh, and we'd like to link the URL above, but we're not allowed to do that either. Bummer.
For general information about Google, please visit www.google.com or www.google.de.(UNQUOTE)
Why? Below is quoted from Wikipedia:
(QUOTE) The German naming issue is due to a trademark dispute between Google and Daniel Giersch. Daniel Giersch owns a company called "G-mail" which provides the service of printing out emails from senders and sending the print-out via postal mail to the intended recipients.(UNQUOTE)