OpenERP V7 Email messages and incoming server is it practical ?

From the idea of integrated the Email into openERP , is execelent , but now when it comes to practicality , 

We test and let you know our result ,

with our server , Xeon CPU , 2.4 GHz , 2GB Ram , where ONLY email account which
is set currently active using the incoming mail to pull into the message and with about 1 months 
of mails , 

from 1/Mar - 14,138 KB (14MB) to 23/Mar - 98,767KB (98MB)

And after login using this user which is set using this email account , the message page will take
few minutes before it can display properly and everytime after you click Archive the
message , it will load again and take around a few minutes ,

so Malaysia / Singapore SME ,  imagine if you are to set incoming email for more users and 
to FULLY use the messaging system without using email client anymore , 
on one hand ,it is good that you have all messages been backup properly , but when it comes
to retrieving or viewing the messages , in fact when it comes to backing up
the messages , the disk space you need to consider...  to me i do not think it is ready for production 
use yet ,

We have to resolve to other solutions but still continue to use this useful features of openERP ,

EMAIL SOLUTIONS for openERP is still remain NOT CLEAR at the moment, but believing 
it would evolve and we do have some wild idea but that is too big of a change ... and we have
no resource for developing yet ...

so do you want to take the risk of taking your own email servers and get it fully integrated with
openERP ?