If you want to make sure your email stays as private as possible, disabling remote images is a good idea.
Just like disabling remote image loading on the Mac prevents companies and spammers alike from detecting when you opened an email, and potentially collecting other information, preventing them from loading on your iPhone and iPad makes sure you are protected against snooping on all your devices.
How to prevent remote images from loading in Mail for iOS
- Launch the Settings app on your iPhone or iPad.
- Tap on Mail, Contacts, Calendars.
- Turn Off the option for Load Remote Images.