It is best practice to use email content in your campaigns that is visible in dark mode on mobile devices if applicable. Punchh's email editor does not make any adjustments for dark mode. This ensures that most if not all guests can view your email content regardless of the display mode of the device.
Best practices include defining background, font and content colors specifically so that they are rendered the same no matter what the color of the background.
For example, If you use White text, it will not show up for the user against a white background, but might be visible in dark mode, whereas black text may not be visible in dark mode (if the background is black).
Defining the background yourself so that it appears the same in both modes can alleviate this potential issue.
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)