Exclaimer allows you to upload custom fonts for use in your signature template. You can also use font stacks, which create a list of fonts to use in case your primary font cannot be displayed. The following table outlines the pros and cons of using custom fonts and font stacks to help you decide which is best for your needs:
Pros Cons
Custom Fonts:
Custom fonts are a group of fonts that vary from the standard web-safe fonts that are recommended by Exclaimer.
These fonts can be uploaded from an .otf (open type file) or .ttf (true type file).
Allows a font to be uploaded and embedded into the template.
Font can be seen by all mail clients, recipients and devices.
Allows for extra customization to the template.
Renders as a bitmap image, which can cause quality issues, and Advanced Rules cannot detect text from bitmaps.
Can be removed on a forward/reply email.
Hyperlinks may not work in Outlook when using Client-Side.
Fixes the text color, which may become invisible in dark mode when using darker shades.
Font Stacks:
Font stacks are used to control how the font will appear to the recipient if they do not have access to your chosen font.
Allows you to use a custom font without uploading it and rendering it as an image.
Allows you to control which fonts to fall back on if the font is not available.
Easy to customize.
Text color is not fixed. Dark shades like black will switch to white in dark mode .
The first/custom font will not be seen if the recipient’s environment does not have the font installed.
