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Difference between custom fonts and font stacks

When designing your signature template, it is essential to understand the pros and cons of using custom fonts and font stacks:

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) - you can add fonts like Roboto.
  • 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.

  • Can be removed on a forward/reply email.

  • Hyperlinks may not work in Outlook when using the client-side.

  • Quality can vary.

  • Fixes the text color, which may become invisible in dark mode when using darker shades.

  • Advanced Rules cannot detect text from bitmaps.

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 font will not be seen if the recipient’s environment doesn’t have the font installed.

Related Topics:
Difference between tables and groups
Difference between background image and background colour

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