Scenario
You are using Exclaimer and often use dark mode on your device. Dark mode is a display setting that changes the color scheme of an interface, usually by inverting light and dark colours, to minimize the amount of blue light to enhance readability and reduce eye strain. You would like to know how dark mode affects your Exclaimer use and email signatures.
Resolution
Different devices and mail clients may affect the appearance of email signatures, including inverting colours and applying dark backgrounds. Unfortunately, a device's dark mode settings cannot be overwritten, and effects can vary greatly between devices and clients, but there are adjustments to your design you can take to optimise your signature for potential viewing adjustments made by dark mode.
- Use images with a transparent background to allow the background colour of the canvas to show through the image.
- If text is used as an image, it is recommended to add a border to the text in an 'opposite' colour before uploading the image to the template. This ensures that if an inverted background is applied, the text outline will be shown and your text will still be visible.
- Render the signature as a bitmap image to resolve the issue if you use a background color, such as black. This will embed the colors used in the signature, resulting in the signature staying the same at all times.
NOTE: If rendering as bitmap, be aware of the following potential complications: signatures may become an attachment or be removed from forward and reply emails. Hyperlinks may not work if using client-side deployment. For more information, see Hyperlinks are missing from my signature.