Mail

 Switch to inbox (Ctrl + Shift + I )

Switch to Outbox (Ctrl + Shift + O )

Check names (Ctrl + K )

Send (Alt + S )

Reply to message (Ctrl + R )

Reply all to a message (Ctrl + Shift + R )

Reply with meeting request (Ctrl + Alt + R )

Forward a message (Ctrl + F )

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 )

Apply Normal style (Ctrl + Shift + N )

Check for new messages (Ctrl + M or F9 )

Go to the previous message (The Up Arrow key)

Go to the next message (The Down Arrow key )

Create a message (When a Mail view) (Ctrl +N )

Create a message (From any Outlook view  ) (Ctrl + Shift + M )

Open a received message (Ctrl + O )

Delete and ignore a conversation (Ctrl + Shift + D)

Open the address Book (Ctrl +Shift + B )

Add a quick flag to an unopened message (Insert)

Display the flagfor follow up dialog box (Ctrl + Shift + G )

Mark as read (Ctrl + Q )

Mark as unread (Ctrl + U )

Open the Mail Tip in the selected message (Ctrl + Shift + W )

Find or replace (F4 )

Find next (Shift + F4 )

Send (Ctrl + enter )

Print (Ctrl + P )

Forward (Ctrl + F)

Forward as attachment (Ctrl + Alt + F )

Show the properties for the selected item (Alt + Enter )

Mark for download (Ctrl + Alt + M)

Check Mark for download status (Ctrl + Alt + U )

Display Send/ Receive progress (Ctrl + B (When a send/ receive is in progress ) )