Jafner.net/dotfiles/sieve/promotions_script.txt

require ["fileinto", "include", "environment", "variables", "relational", "comparator-i;ascii-numeric", "spamtest", "regex", "imap4flags"];

# Generated: Do not run this script on spam messages
if allof (environment :matches "vnd.proton.spam-threshold" "*",
spamtest :value "ge" :comparator "i;ascii-numeric" "${1}")
{
    return;
}

if allof (address :all :comparator "i;unicode-casemap" :contains "From" [promotions_domains]) {
    fileinto "Promotions";
    keep;
}