RT CommandByEmail extension

To all,

I'm afraid my upgrade to 3.8.2 is gonna be delayed a few months due to 

some more pressing requirements. One of those is to get CommandByEmail
up and running. WE haven’t used it before. We are currently on 3.6.4.
Other than changing our RT_SiteConfig.pm file, are there any potholes,
hints, tips, version updates, etc. that I should be aware of? Any
helpful install/implement hints/tips? Thanks in advance.