Print the selected message: CONTROL+P
Send and receive mail: CONTROL+M
Delete a mail message: DEL or CONTROL+D
Open or post a new message: CONTROL+N
Open the Address Book: CONTROL+SHIFT+B
Reply to the message author: CONTROL+R
Forward a message: CONTROL+F
Reply to all: CONTROL+SHIFT+R or CONTROL+G (news only)
Go to your Inbox: CONTROL+I
Go to the next message in the list: CONTROL+> or CONTROL+SHIFT+>
Go to the previous message in the list: CONTROL+< or CONTROL+SHIFT+<
View properties of a selected message: ALT+ENTER
Refresh news messages and headers: F5
Go to next unread mail message: CONTROL+U
Go to next unread news conversation: CONTROL+SHIFT+U
Go to folder: CONTROL+Y
Open a selected message: CONTROL+O or ENTER
Mark a message as read: CONTROL+ENTER or CONTROL+Q
Move between the Folders list (if on), message list, preview pane, and Contacts list (if on).: TAB
Mark all news messages as read: CONTROL+SHIFT+A
Go to a newsgroup: CONTROL+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 next unread newsgroup or folder: CONTROL+J
Download news for offline reading: CONTROL+SHIFT+M
Close a message: ESCAPE
Find text: F3
Find a message: CONTROL+SHIFT+F
Switch among Edit, Source, and Preview tabs: CONTROL+TAB
Check names: CONTROL+K or ALT+K
Check spelling: F7
Insert signature: CONTROL+SHIFT+S
Send (post) a message: CONTROL+ENTER or ALT+S