Sparkle.io

Sparkle.io combines BIMI and MTA-STS lookups in a single tool, letting you verify both your brand display configuration and your email security policy at the same time. The lookups show exactly what's published in DNS for each protocol, revealing misconfigurations or missing records that could limit your deliverability or brand visibility.

Useful when you want a quick side-by-side check of multiple authentication layers. The tool works well for comparing your setup against what mailbox providers see, helping identify why your BIMI might not be displaying or why MTA-STS policies aren't being honored.