| Help: Identity for SASL PLAIN authentication |
| Example: --sasl-authzid zid imap://example.com/ |
| Use this authorisation identity (authzid), during SASL PLAIN authentication, |
| in addition to the authentication identity (authcid) as specified by --user. |
| If the option isn't specified, the server will derive the authzid from the |
| authcid, but if specified, and depending on the server implementation, it may |
| be used to access another user's inbox, that the user has been granted access |
| to, or a shared mailbox for example. |
