Microsoft Office Keyboard Short-Cuts

http://office.microsoft.com/en-us/outlook-help/keyboard-shortcuts-HP003084223.aspx

TO DO THIS PRESS
Switch to Inbox CTRL+SHIFT+I
Switch to Outbox CTRL+SHIFT+O
Choose the account from which to send a message CTRL+TAB (with focus on the To line) and then TAB to the Accounts button
Send ALT+S
Reply to a message CTRL+R
Reply all to a message CTRL+SHIFT+R
Mark a message as not junk CTRL+ ALT+J
Display blocked external content (in a message) CTRL+SHIFT+I
Post to a folder CTRL+ SHIFT+S
Check for new mail CTRL+M or F9
Go to the next message UP ARROW
Go to the previous message DOWN ARROW
Go to the row above (message or group heading) ALT+ UP ARROW
Go to the row below (message or group heading) ALT+ DOWN ARROW
Compose a new message CTRL+N
Open a received message CTRL+O
Display the Address Book CTRL+SHIFT+B
Convert an HTML or RTF message to plain text CTRL+SHIFT+O
Add a Quick Flag to a message INSERT
Display the Flag for Follow Up dialog box CTRL+SHIFT+G
Mark as read CTRL+Q
Show the menu to download pictures, change automatic download settings, or add a sender to the Safe Senders List. CTRL+SHIFT+W