# Email Masks **Email Masks** are email addresses that your users can provision that, instead of being able to send or receive email messages themselves, forward email messages to or from the user's real email address. This allows the user to provide the Mask Address instead of their real address when signing up for websites, online shopping, etc. A user can create multiple masks associated with their real email address. Normally, an Email Mask would be associated with one of the user's Sudo Platform Email Addresses, but the option to use an external email address is also available, if you choose to offer it. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.sudoplatform.com/guides/email/email-masks.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.