Extra capabilities Option

Introduced in release: 7.0.5.31.0

If the  IMAP option is set, the string specified is included in the IMAP server capability list. The use of capability names that do not begin with &#x27; &#x27; will often break IMAP standards compliance and manifest as client compatibility problems that may result in support calls. As a result, use of this option is not recommended. Including &#x27; &#x27; in this value will also violate the standard and break client compatibility.

See also:
 * IMAP options