Hi Spider Tech and thanks for the quick answer.
Here are my answers:
1: I'm using a POP 3 account
2:No
3:?? I do not know; where is the possibility to enable auto archiving?
4: Yes the messager are correctly stored within Outlook
In addition I inform you that the call center of my provider said that they do not store the messages after having sent them to the Client ( it seems to me quite strange...but it could be)
Frasal