Try this tip to quickly label or flag emails that need attention.
Gmail labels are very powerful and customisable tool.
A label can be called anything and be (nearly) any colour.
Set up your own system of flags and reminders using this tip to quickly label an email.
The easiest way to label an email is to click the label name from the left-hand menu and drag and drop it onto the email. This way the emails can remain in the inbox but clearly labelled, or flagged, so that you don't miss them.
Simply add a useful name - such as "Urgent" and make sure you give the label a bright, bold colour, so it stands out clearly flagging the urgent emails.
This is great for the emails that need extra attention as not only does it label the email, it also stays in your inbox until it’s ready for archiving.
As a starting point for new Gmail users, when you first get your Gmail account you'll notice there are some default labels created to get you going. Rather than use these labels with the archive choice to move them out of your Inbox why not use them to flag emails that may require some action from you.
If you want to get rid of a label, open the email and click on the cross next to the label at the top of the email - easy!