Comodo doesn't handle the renewal alerts for us, the only communication they have with a clients email address is the D.C.V. email, which in our case since we handle the whole process for them we set to hostmaster@domain.com and set a forwarder on the to the SSL administrator...so for 75% of our clients Comodo never addresses them directly. For the other 25% there maybe a verification call back done by Comodo, and as said before EV SSLs are a monkey all their own and its best to put the client and the CA Validation department together directly, and get out of the middle or someone might want some of your DNA too......