> ## Documentation Index
> Fetch the complete documentation index at: https://help.kajabi.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Customize typography in Email Campaigns
> Customize font style and font sizes for desktop and mobile devices to match your brand.
Font type plays a significant role in the personality and character of your brand. In the **Typography** section, you can customize font style and font sizes for desktop and mobile devices.
## Custom font
### Select a custom font
**Note:**
Custom Fonts are only supported in modern email clients. Ensure the readability of your email content across different email clients by selecting a Fallback Body and Heading Font.
* Open the **Settings** tab in the Editor.
* Click **Typography**.
* Check **Use Custom Fonts:**
* Then, select your Body Font:
* Select your Heading Font:
## Fallback font
Select a Fallback Font for email clients that may not support your selected Custom Font.
### Select a fallback font
**Tip:**
To use the default Fallback Fonts without Custom Fonts, uncheck Custom Fonts and simply select your desired Fonts under the Body Font (Fallback) and Heading Font (Fallback) dropdown menus.
## Configure email visibility
Customize the email font size to optimize the reader experience across devices.
### Desktop font sizes
* Select the **Settings** tab in the Editor.
* Click open **Typography**.
* Navigate to the Desktop Font Sizes header.
* Use the dropdown menus to specify your Desktop Font Sizes:
### Mobile font sizes
* Select the **Settings** tab in the Editor.
* Click open **Typography**.
* Navigate to the Mobile Font Sizes header.
* Use the dropdown menus to specify your Mobile Font Sizes:
For best practices when customizing your Font Sizes, read [How to Optimize Your Font Size in Email Campaigns](../../marketing/email-campaigns/how-to-optimize-your-font-size-in-email-campaigns) for details.