Update emails.md

update the content on the emails page.

Author: pravinOpenSign

docs/docs/help/User Menu/Console/emails.md

@@ -18,6 +18,9 @@ If you prefer not to grant users permission to set up their own email templates,
 
 <img width="800" alt="custom email templates" src="https://github.com/user-attachments/assets/b2fd3497-3e2b-4acc-b8a5-09bad8a5e5ba"></img>
 
+To set up SMTP at the user level, refer to the guide here:  
+https://docs.opensignlabs.com/docs/help/Settings/Custom-email-templates
+
 ---
 
 ## ✉️ Request Signature Email