Not my area of expertise, but this would seem to mean perl is complaining that the Email/Simple.pm module is not found. @INC is an array of directories in which perl searches, in order of appearance in that array.
Now, when I go
[taffy]$ locate Email/Simple.pm
It shows Email/Simple.pm installed on my server. Which is taffy. Try running 'locate Email/Simple.pm' from your command line and see what you get. If it isn't installed, you can either ask for help from support (which seems legitimate) or else install the module in a subdirectory under your $HOME. You can do the latter, though it takes a little work. Then you need to instruct perl to look there and I'm sure there's at least one way, probably more, to do that but I'd have to refresh my memory.
The subtle source is clear and bright
The tributar streams flow through the darkness