Here are a couple of iPhone links I have been using. Part of the problem with iPhone Safari is it looks like a normal browser to our servers, so we don’t automatically switch to the mobile version. This works fine in some interfaces, but in gmail, calendar, and reader, you want the mobile versions.

• Gmail: to get a mobile version of gmail simply go to http://m.gmail.com
• Google calendar: http://calendar.google.com/m (no trailing slash)
• Google apps email
  • URL: http://mail.google.com/a/<your domain>/x/ (trailing slash important), for example http://mail.google.com/a/google.com/x/.
  • POP setup:
    • incoming host name: pop.googlemail.com
    • incoming user name: recent:username@yourdomain.com
    • outgoing host name: smtp.googlemail.com:465
• Google apps calendar: http://calendar.google.com/a/<your domain>/m (again, no trailing slash)

Michael N. reminded me of the email interface to Flickr. Flickr creates a random email address which you can email to add photos to your stream. Create a new contact named Flickr and use the email address provided on your account page. When you are looking at a photo click on the icon in the lower left, choose “Email Photo” and use the Flickr contact. Done and done.