I have successfully installed E2C to use Google apps.

The thing is that the attachments are:
1. Large attachments are ripped form the message and stored on the local server directory. (Nothing is written in the created case to mention it)
2. Small attachments vaporize !!!  They are not saved to SF, nor to the local directory. - The user registred with E2C is an administrator, and can create and edit attachments.

Anyone