Create account-level blocklist rule

curl --request POST \
  --url https://api.jetemail.com/inbound/account/blocklist \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Block spam domain",
  "description": "Block all emails from spam-domain.com",
  "senders": [
    {
      "sender_type": "domain",
      "sender_value": "spam-domain.com"
    }
  ]
}
'