Downloading 2 email accounts into ZOHO

I really love your product, and been training myself in all the features. In the email, I added a second account. MY default is .net, and I added .com. I sent an email from my excite email, and it never downloaded. I have also sent an email to my yahoo account, and it has never showed up. Also it seems when a new user submits his info, he has immediate access to the system. Normally an email is sent out to authenticate the user ( to prevent people from playing jokes). Is that in the works? or am I experiencing a "bug". ( I did this with my yahoo email account, and was able to log into the system immediately, and nothing arrived in yahoo mail.
THis would be a great feature if it worked correctly.

Thanks,
mjabin