Mail Keyboard shortcuts.

Shortcut Key	Definition	Action
c	Compose	Allows you to compose a new message. <Shift> + c allows you to compose a message in a new window.
/	Search	Puts your cursor in the search box.
k	Move to newer conversation	Opens or moves your cursor to a more recent conversation. You can hit <Enter> to expand a conversation.
j	Move to older conversation	Opens or moves your cursor to the next oldest conversation. You can hit <Enter> to expand a conversation.
n	Next message	Moves your cursor to the next message. You can hit <Enter> to expand or collapse a message. (Only applicable in 'Conversation View.')
p	Previous message	Moves your cursor to the previous message. You can hit <Enter> to expand or collapse a message. (Only applicable in 'Conversation View.')
o or <Enter>	Open	Opens your conversation. Also expands or collapses a message if you are in 'Conversation View.'
u	Return to conversation list	Refreshes your page and returns you to the inbox, or list of conversations.
y	Archive* Remove from current view	Automatically removes the message or conversation from your current view. From 'Inbox,' 'y' means Archive From 'Starred,' 'y' means Unstar From any label, 'y' means Remove the label * 'y' has no effect if you're in 'Spam,' 'Sent,' or 'All Mail.'
x	Select conversation	Automatically checks and selects a conversation so that you can archive, apply a label, or choose an action from the drop-down menu to apply to that conversation.
s	Star a message or conversation	Adds or removes a star to a message or conversation. Stars allow you to give a message or conversation a special status.
!	Report spam	Marks a message as spam and removes it from your conversation list.
r	Reply	Reply to the message sender. <Shift> + r allows you to reply to a message in a new window. (Only applicable in 'Conversation View.')
a	Reply all	Reply to all message recipients. <Shift> +a allows you to reply to all message recipients in a new window. (Only applicable in 'Conversation View.')
f	Forward	Forward a message. <Shift> + f allows you to forward a message in a new window. (Only applicable in 'Conversation View.')
<Esc>	Escape from input field	Removes the cursor from your current input field.

Combo-keys - Use the following combinations of keys to navigate through Gmail.

Shortcut Key	Definition	Action
<tab> then <Enter>	Send message	After composing your message, use this combination to send it automatically. (Supported in Internet Explorer and Firefox, on Windows.)
y then o	Archive and next	Archive your conversation and move to the next one.
g then a	Go to 'All Mail'	Takes you to 'All Mail,' the storage site for all mail you've ever sent or received (and have not deleted).
g then s	Go to 'Starred'	Takes you to all conversations you have starred.
g then c	Go to 'Contacts'	Takes you to your Contacts list.
g then d	Go to 'Drafts'	Takes you to all drafts you have saved.
g then i	Go to 'Inbox'	Returns you to the inbox.

Calendar Keyboard Reference

Shortcut Key	Definition	Action
c	Create Event	Allows you to create a new event. <Shift> + c allows you to create an event in a new window.
/	Search	Places your cursor in the search box
p	Previous date range	Moves your calendar view to the previous date range
n	Next date range	Moves your calendar view to the next date range
t	Jump to "Today"	Moves you to the current day
d	"Day" view	Displays your calendar in the "Day" view
x	Customized view	Displays your calendar in a customized view
w	"Week" view	Displays your calendar in the "Week" view
m	"Month" view	Displays your calendar in the "Month" view
a	"Agenda" view	Displays your calendar in the "Agenda" view
q	Quick Add	Opens "Quick Add"
Esc	Back to calendar	Brings you back to the default calendar view

Event Keyboard Reference

Shortcut Key	Definition	Action
Enter	Expand	Expands a collapsed region
Tab	Next field	Moves your cursor to the next field
Alt then s	Save	Saves the event
Esc	Back to calendar	Brings you back to the default calendar view

Keystroke	Action	Definition
j	next	view the next item in your reading list
k	prev	view the previous item
n	scan down	scroll to the next item without viewing it
p	scan up	scroll to the previous item without viewing it
shift n	page down	scroll down by one screen of items
shift p	page up	scroll up by one screen of items
o or <Enter>	view item	view the selected item
h	top	go to the top of your reading list
r	refresh	refresh your reading list
s	star	star the current item
l	label	jump to the form for labeling the current item
v	show original	open original item in a new window
g then h	home	loads your home (reading list) items
g then s	starred	loads your starred items
g then u	edit subscriptions	loads your subscriptions and labels
g then r	read items	loads your read items
g then l	label selector	lets you type in a label and then loads it