diff --git a/docs/self-hosting/auth-behavior.mdx b/docs/self-hosting/auth-behavior.mdx
index 33d273ffed..2ca5fd49a2 100644
--- a/docs/self-hosting/auth-behavior.mdx
+++ b/docs/self-hosting/auth-behavior.mdx
@@ -62,3 +62,7 @@ For more information on SSO setup, see:
 - [Azure AD OAuth](./configuration/auth-sso/azure-ad-oauth)
 - [Open ID Connect](./configuration/auth-sso/open-id-connect)
 - [SAML SSO](./configuration/auth-sso/saml-sso)
+
+<Note>
+  Formbricks does not support special characters, such as Cyrillic, in account email addresses to avoid technical, compatibility, and security issues. Additionally, universal support for such addresses is still limited. 
+</Note>
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