To check if crazymailing.com has been flagged by spam filters, we need to see if the domain or its IP address is listed on common DNS-based blacklists, run diagnostics on SPF, DKIM, and DMARC, and review sender reputation metrics. Use Abstract API's IP Abuse Check tool for a complete report on abuse, blacklists, and suspicious activity.

With a registration date of 2010-05-10 and a risk score of 39, crazymailing.com maintains a moderate email sender reputation. The domain enforces DMARC (Quarantine) and uses a strict SPF policy (-all), enhancing trustworthiness. Despite being a disposable email, its deliverability remains high due to these robust security measures, ensuring messages are less likely to be filtered or rejected.

To improve domain reputation, crazymailing.com should maintain consistent sending volumes, avoiding sudden spikes or suspicious patterns. Next, remove the disposable email configuration to ensure legitimate user accounts. Additionally, authenticate email traffic using DKIM to prove authenticity and deter spoofing attempts. These measures will significantly enhance trust and reduce the likelihood of emails being filtered as spam.