Here is a controversial truth:
No matter what software you use, your "key" to success isn't the license—it's your technical setup . Make sure your SPF, DKIM, and DMARC
If your budget is truly $0, avoid cracked software and use (1,000 contacts, 10,000 emails/month). It is legal, safe, and delivers better than any cracked version of MaxBulk.
A cracked key does nothing to improve these. In fact, many cracked versions strip out the built-in list cleaning and bounce handling features, making your emails land in spam.