Useful Information

Difference between background image and background color

Limitations within the signature template

Image file requirements

Pixel to Point conversions

Colored borders, grouping, and inherit properties in the Signature Designer

Difference between custom fonts and font stacks

Embedded images vs linked images in email signatures

Difference between tables and groups

How does dark mode affect email signatures?

Is your chosen font web safe and available for use?

Guidelines for signature design