<https://forum.spamcop.net/topic/1877-resolved%C2%A0held-mail-folder/#comment-11976>
<http://schema.org/text>
"Options, SpamCop Tools, Select your email filtering blacklists.  \n\nBlock All: This option allows you to block email from anyone not on your whitelist. This will stop essentially all spam, but will also stop all valid email unless the sender is in your whitelist. \n\nI sthis what you are looking for? \n"
<https://forum.spamcop.net/topic/1877-resolved%C2%A0held-mail-folder/?tab=comments>