SPF, DKIM, and DMARC are email authentication protocols that protect your domain from spoofing and phishing.

SPF verifies sending servers, DKIM ensures email integrity, and DMARC adds reporting and enforcement.

You can configure them in your domain’s DNS records—many hosts offer simplified tools like hostizm.

Without these records, your emails are more likely to land in spam folders.

Setting them up builds trust with ISPs and improves deliverability for newsletters and campaigns.