Congratulations: your last email campaign generated a really high click-through rate.  Or did it? It’s an issue that B2B marketers are experiencing with increasing frequency: open rates and click-through rates that don’t quite match up, typically in the form of an abnormally high “click to open” (CTO) rate.  The culprit? Email bots. Acting as a spam filter, email bots prevent malicious emails from infiltrating mail servers by auto-clicking the links in incoming emails. The result is that marketers may see…