diff --git a/11/umbraco-forms/developer/magic-strings.md b/11/umbraco-forms/developer/magic-strings.md
index e775cabc9ae..e4270b9e842 100644
--- a/11/umbraco-forms/developer/magic-strings.md
+++ b/11/umbraco-forms/developer/magic-strings.md
@@ -23,6 +23,8 @@ Some examples of variables that are normally available in `HttpContext.Request`:
 
 The variables are not case-sensitive.
 
+You can use it for any available query string variable in the URL as well. If your URL has the query string `?email=foobar@umbraco.com`, you can get the value of the query string into your field by using `[@email]`.
+
 ### Dictionary Items
 
 For multi-lingual websites, rather than hard-coding labels like form field captions, a dictionary key can be entered as, for example, `#MyKey`. When the form is rendered, the placeholder will be replaced by the value of the dictionary item identified by the key, according to the current language.