* Add warning to mailer documentation about authentication
References #7966
Signed-off-by: Andrew Thornton <art27@cantab.net>
* As per @guillep2k and @mrsdizzie
* as per @mrsdizzie
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>