itemtype.php

<?php
 
namespace Bitrix\Mail\Blacklist;
 
class ItemType
{
 
    const DOMAIN  = 1;
    const EMAIL   = 2;
    //const PATTERN = 3;
 
    public static function resolveByValue($value)
    {
        if (mb_strpos($value, '@') > 0)
            return ItemType::EMAIL;
        
        return ItemType::DOMAIN;
    }
 
}