Hello @RobertT071 ,
I believe the issue has to do with the accented í in your URL, which is making the base URL that you pasted not able to be applied to the email editor. However, when I take the reformatted URL that our Community provides, I am able to link that in the email editor.
So, for our email editor, you'd need to replace "el-día-de-los-muertos" with "el-d%C3%ADa-de-los-muertos" in order for it to insert properly. Otherwise, you'd need to use something like a URL shortener to get a different URL for the document.
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