Wuala is document centric
A vast majority of important emails in economic activity have attachments. Very often, the attachement is the central element in the email, and the text only introductory comment. Wuala reverses the perspective. The document is shared across several users, who are all notified of the update. In practise, communicating a document solely amounts to saving it inside a folder.
Emails do not offer the chance to reformulate a massage that could have been perceived as excessive. A document or comment in wuala can be modified so as to not persist in an erroneous form.
Direct activity on a document
Every group participant may comment or edit a document according to his/her rights. Here again, all participants get notified.
Email consists in a raw flow of data. Instead, wuala offers to share docuemnts by placing them within an organised structure of files and folders. This relieves all viewers to create their own organisation of filters and folders.
Economy of resources
Using email leads to multiply the copies and versions of the same documents. A 5 MB file (a pdf for instance) shared across 200 viewers takes up to 1 GB for each version. Quantifying the space lost is difficult, but it suffices to consider that a standard mailbox reaches several gigas, despite a certainly much smaller truly useful data amount. Here again, wuala prevents duplication, but also allows for collaborative editing of a single document, which further extends the savings. Wuala's time machine and automatic trash bins make the collaborative process even easier.
All wuala exchanges are encrypted at the source. Private and shared documents can be deciphered by the owner or group members alone. Not even the wuala servers can do this.
Groups: better than mailing lists
Mailing list users generally cannot know the entire list of their members. In contrast, wuala groups have a known list of participants.