Open Help topics

F1

Select all messages

Control + A

Print the selected message

Control + P

Send and receive mail

Control + M

Delete a mail message

Delete 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)

Open the Inbox

Control + I

Go to the next message in the list

Control + > (greater than) 

or Control + Shift + > (greater than)

Go to the previous message in the list

Control + < (less than)

or Control + Shift + < (less than)

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 thread

Control + Shift + U

Go to folder

Control + Y

Open the 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 thread (show all responses)

Left Arrow or Plus Sign

Collapse a news thread (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