# Email Security ## Certificates Certificates can be uploaded into Email This Issue to process encrypted emails with Mail handlers. Currently, only PKCS12 certificates are supported.

### Adding Certificate To upload a Certificate the following are compulsory: * a name * the certificate file itself * the corresponding Certificate and Private Key passwords (these are usually identical). Please keep in mind that the name should be unique across all the certificates.

Certificates are not editable, therefore if a certificate expires a new one has to be created. To ensure the safety of the Certificates, we are encrypting them even before writing them into the database, where it will receive database-level encryption same as all of the data stored by us. --- # 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.meta-inf.hu/email-this-issue/administration/email-security.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.