Google is now offering more than 6 gigs of storage for every gmail account!
Never dreamed(!) of using this space as a remote disk ? (for backing up, sharing files between several computers, extending your dedicated server disk space ?)
Well, let’s give it a try; first you need to install :
gmailfs python-fuse python-libgmail fuse-utils libfuse2 with a :
% sudo apt-get install gmailfs python-fuse python-libgmail fuse-utils libfuse2 encfs
edit the configuration:
% sudo vim /etc/gmailfs/gmailfs.conf
edit this file precising your gmail account (I recommend you to dedicate this gmail account only to gmailfs)

the fsname is a string that will appear in the subject of every mail gmailfs will send to your account, so if someone sends a message to your gmail adress using this fsname string in the subject, he would corrupt your filesystem !

copy this file to your home directory :
% cp /etc/gmailfs/gmailfs.conf ~/.gmailfs.conf

one last thing, we have to create a mount point :
% mkdir ~/gmail

now , we’re ready to mount the filesystem!

Being root :

or you can mount it at start-up adding this to your /etc/fstab:

(if you have this error when mounting :

it means that your libgmail is outdated (in other words the one in ubuntu repositories is outdated).
So you need to update it manually, using the python update system (easy_update) :

at this time, libgmail 0.1.8 is the most recent.
you can now mount it as described before)

yeah but you will notice by doing that ONLY root will be able to « cd » into that mount point!
So if you mount your user to access it, you will have to mount with that user, not using mount, but using :

That way your user will be able to access the mount point !

Sources :
Ubuntu-fr Documentation (french)
Howto gmailfs on Gentoo Linux Wiki