Can I send this image / font?

aka “What's CORSing you problems?”

Sometimes server configuration makes it so that an image, font, or really any hosted asset can only be used from a specific website or app. This means that email clients won’t be able to load the asset and your email won’t look right. For example, a font might not load in or an image might be blocked.

Plug in the URL of the image or font you want to use in an email and we’ll tell you if it’s safe to use!