We've previously highlighted renewal reminders from Carbonite, but their latest iteration deserves recognition again. First, Carbonite now reminds subscribers how many files s/he has with the company, thereby making renewal more of a "need" than a "want." We wished that number had been bigger and up top, but the company does make great use of the pre-header space, thereby making sure that subscribers viewing this email on a mobile device see "Keep your XXX files protected…" right after the sende...