Am 08.09.2012 15:10, schrieb Robert Schetterer:
pop3 feature leave mails on the servers works i.e with thunderbird with a local list in Tb what is allready download for compare so its not only a server feature, so you will allways download all mails new if using a new client without that list, or you changed something on the server ( i.e X-UIDL changed ) and existing list isnt longer build like before
see i.e
http://kb.mozillazine.org/Popstate.dat
however i had some problems with pop3 leave mails on the server with virtual plugin, but that was fixed and works with setup right way
and that is why every mail-client has a option "delete messages after x days from server" but users are refusing to spent some minutes of their time looking what options software offers for wondering years later