I want to highlight all the emails that came from a particular friend. How can I do that in Gmail?
migrated from superuser.com Aug 1 '11 at 6:22
Just use labels and a filter.
You will now have a label on the left hand side of your inbox. Clicking this will show all emails from your friend. It will also add the label to all the emails from your friend in whatever folder they are currently in (e.g. your inbox).
Have a look at changing the colour of the label to make it stand out. As an example this is what two of mine look like:
The closest solution I can think of is to setup a filter and assign a label.
Once the label is created, you can assign a colour to it, and this is how it will look like