Note: Click can only support web safe fonts. For more information about web safe fonts, please visit this page.
It is possible to add custom fonts into the Drag and Drop editor. In order to do so, you will need to open the editor for your email, select the Global Styles tab, and select the Add Custom Fonts option at the bottom of the tab.
This will open the "Add Custom Fonts" window.
Add CSS font URL: This is the URL of the font that you would like to load. For acquiring this URL from Google Fonts, you would need to open your desired font, select Get Font, and then select the Get Embed Code option.
This will open a window with options for the font. You will then want to click on the Web tab and copy just the URL highlighted in the screenshot below. You do not need the preconnect URLs or any of the other HTML.
Enter this URL in the Editor's Add CSS font URL. field and click Upload Font. Afterwards, the font should then appear in your font drop-down menu under the 'Custom Font' section.
Preview Name: This is the name that will appear for this custom font in the font drop-down menus.
Select fallback font: This is the font that will be used if the custom font is not able to be loaded by the recipient's email client.