`allowhrefs`: `<boolean>` ('default =' `1`)::

Allow to view hyperlinks. When disabled hyperlinks will be displayed as plain-text.

`lifetime`: `<integer> (1 - N)` ('default =' `7`)::

Quarantine life time (days)

`viewimages`: `<0 | 1 | on-demand>` ('default =' `1`)::

Control how images in quarantined mails are displayed. '1' shows all images, including externally hosted ones; '0' hides all images; 'on-demand' shows only embedded images and lets the user load externally hosted ones manually (avoids leaking that a mail was opened).

