Using Outlook Express keyboard shortcuts
You can use shortcut keys to select commands and navigate through the preview pane and the message list. Except where indicated, shortcuts apply to both e-mail and newsgroups.

Main window, view message window, and send message window

To Press 
Open Help topics F1 
Select all messages CTRL+A 

Main window and view message window 

To Press 
Print the selected message CTRL+P 
Send and receive e-mail CTRL+M 
Delete an e-mail message DEL or CTRL+D 
Open or post a new message CTRL+N 
Open the Address Book CTRL+SHIFT+B 
Reply to the message author CTRL+R  
Forward a message CTRL+F 
Reply to all CTRL+SHIFT+R or CTRL+G (news only) 
Go to your Inbox CTRL+I 
Go to the next message in the list CTRL+> or CTRL+SHIFT+> 
Go to the previous message in the list CTRL+< or CTRL+SHIFT+< 
View properties of a selected message ALT+ENTER 
Refresh news messages and headers F5 
Go to the next unread e-mail message CTRL+U 
Go to the next unread news conversation CTRL+SHIFT+U 
Go to a folder CTRL+Y 

Main window

To Press 
Open a selected message CTRL+O or ENTER 
Mark a message as read CTRL+ENTER or CTRL+Q 
Move between the Folders list (if on), message list, preview pane, and Contacts list (if on). TAB 
Mark all news messages as read CTRL+SHIFT+A 
Go to a newsgroup CTRL+W 
Expand a news conversation (show all responses) LEFT ARROW or PLUS SIGN (+) 
Collapse a news conversation (hide messages) RIGHT ARROW or MINUS SIGN (-) 
Go to the next unread newsgroup or folder CTRL+J 
Download news for offline reading CTRL+SHIFT+M 

Message window—viewing or sending

To Press 
Close a message ESC 
Find text  F3 
Find a message  CTRL+SHIFT+F 
Switch among the Edit, Source, and Preview tabs CTRL+TAB 

Message window—sending only

To Press 
Check names  CTRL+K or ALT+K 
Check spelling F7 
Insert a signature CTRL+SHIFT+S 
Send (post) a message CTRL+ENTER or ALT+S