Most marketing emails contain a single pixel hidden in the email which tracks you. This pixel calls home, lets the marketers/spammers know that you opened the email, and begins tracking your movement through their system.
Here is how to block it within Outlook on your IOS device (ipad, iphone, etc)
Open Outlook
Click on the Avatar for you at the top left of the main screen
At the bottom left column you will see a gear. Click it
Find Mail Accounts
Click on your Office 365 Account / Google Account / Whatever you have for email
Find Block External Images
Turn it on
Thats it! Tracking pixel disabled
