I have sent a number of individual emails to leads from within Zoho CRM. Each email uses my email address. There are a few emails that I believe are wrong but went ahead and sent anyway and never received a notice that they are wrong like you would get if you emailed from your email program. I then did completely wrong email from my domain to confirm they are not coming back.

My question then is how do I know if any of these emails actually made it to the lead?

Shawn