
The Extended Sidebar
There are 2 ways to activate the extended sidebar in Sparrow.
You can simply drag the separtor between the message list and the sidebar to the right
or
You can do it via the Menu > Window > Extended Sidebar

Affecting labels
Affecting labels to your mail to keep a clean Inbox is easy. Right-click the mail you want to labelize and select the ‘label’ section. The list of your existing labels will be displayed. Clicking a label in the list will affect it to the mail.
Do the same to ‘Archive and Label’ a mail.
You can also affect a label with ⌘-L
or Archive and Label with ⇧-⌘-L

