Mail Labeler highlights emails based on account

There is both a paid $.99 version and a free trial version that only highlights one account. If you only have two accounts the trial version would work great to tell them apart in the combined Inbox.

The setup is easy and allows you to see the colors assigned as you set them. It adds highlights to both the Inbox list view and the header when viewing messages. In mail list view you can specify how much of the message info is highlighted; just a thin bar on the left side or the entire list item. Likewise in the reading view you can highlight nothing, the Subject only, Header section 1, Header section 2, both Header sections or just the top bar.


For those with multiple email addresses using the Apple Mail app this might be a welcome addition.