[Evolution] download sent mail...

[No more cries <nomorecries gmail com>]

hello !
At work, I send my email via the website www.gmail.com because evolution isnt installed on the computers and outlook is too slow... 
But once at home, i'd like evolution to take back those sent email in the sent folders whereas the sent email of the day stay on the server and are not downloaded by evolution...
how should i proceed, is there a way to get them all back ?
thanks!