MxToolbox is the standard tool for DNS, email deliverability, and blacklist diagnostics. StoreVitals is a broader ecommerce health monitor that includes basic DNS health checks alongside performance, SEO, and security audits.
MxToolbox is the gold standard for email deliverability and DNS diagnostics — if those are your specific concern, use it. StoreVitals takes a broader approach: DNS health is one of many checks alongside SEO, performance, security, accessibility, and content. For ongoing ecommerce health monitoring, StoreVitals' weekly scans catch issues across the full surface area. For a deep dive when an email problem appears, MxToolbox is still the right tool. The two complement each other; many of our agency users rely on both.