delete a batch of conversations, you can tap Undo in the green bar (that
appears briefly after the action) at the top of the Inbox screen to return the
messages to the Inbox or appropriate label. You can also use Undo after muting,
archiving, and reporting spam. If you never work with batches of messages, you
can hide the check boxes to leave more room for the subjects of conversations
(See Changing Gmail Settings on page 149).
Labeling a Conversation
As mentioned previously, conversations are organized by labels. Gmail has several
default labels, but you can also add your own through Gmail on the Web.
To label a conversation or change a conversation's labels:
1. When viewing a conversation tap
2. In the dialog box that opens, check the labels you want to assign to the
conversation and tap OK.
Accounts and Messaging
> Change labels.
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