Useful as a general tool for identifying visitors? No. Useful as a spearphishing tool for getting to specific people? Absolutely. What do you figure as the li

Useful as a general tool for identifying visitors? No. Useful as a spearphishing tool for getting to specific people? Absolutely. What do you figure as the likelihood that there are people in positions of power or influence right now who are using pseudonymous email addresses from third party providers? I'd peg it at near 100%,though I'm not in a position to identify specific ones.