The outlook app on iOS by default uses dark mode for me. My dark logo which is presented on a white background in the courier design view is now invisible on mobile emails for me.
Does courier support light and dark brand variations to support this?
Hi there @acrooks 
Thanks for reaching out!
We do support Dark-mode by default, but we don’t have options to customize the dark theme. Email clients usually do what they can to make dark theme work. If you know how to target dark mode through CSS, our editable custom brand header allows it, but there’s no pre-defined ways to do it via the app.
Cheers!