AT Mail native mail client Apple you may find that some messages in your inbox are highlighted. In particular, messages from Apple are often highlighted in blue. This is due to the preset rules in the Mail settings area. If you don’t want to highlight your posts from Apple or anyone else, you can easily turn off any previously set rules, as well as remove existing highlights.
The information in this article applies to Apple Mail 9.3 and later.
Disable message highlighting
Here’s how to find and remove all preset mail highlighting rules, including the rule that highlights Apple messages in blue.
In the application » Mail» select » Mail» > » Settings» .
Go to tab » Rules «.
Look for rules like » News from Apple» » Apple News» or something similar. Any highlighting rules will also be highlighted in this list.
To delete a rule, select the rule and then click » Delete» .
Select » Change», to change the rule, including using a different highlight color.
In the dialog box that pops up asking if you’re sure, click » Delete» .
You have removed the rule and will no longer receive highlighted messages from this sender.