Anyone knowns what are the limits for the N900 mail app regarding big mail boxes?

I have an IMAP account. It has 2.8GB, 160.498 messages sorted out in 273 subfolders (only 1-2 leves of recursion among folders).

When I reach some folders like Inbox, a number of Expunged messages shows up, and after that N900 mail app just clears the on-screen contents and I cant actually see the mails in that folder.

When I navigate to some folders with a smaller amount of messages, in the same Mailbox, I can access all mails.

I have reached the same limits on iPhone and BlackBerry before. N900 took more time and certainly suported more e-mails before its limit was reached. Now it did.

If I can figure out what is the limit maybe I can arrange my e-mails to avoid it. Or if I can tune up (increase some limits) the device to support por e-mail...

Any ideas?

Have you tried using nokia messaging? It only syncs the last month, that might help.

No, I havent. I only used the default (standard) mail app.

Where do I find this nokia messenger? I tried from the app manager.

According to http://email.nokia.com/account/home.action it seems that I am already using it (default on N900), or maybe I cam confused.

edited.... seems like you are using it. Did you point the email app on the n900 at your nokia messaging account?

Hey mate, I'm using the default n900 mail app too and would be great not only increase its size but also would be great tune its speed for exemple when you open any inbox, maybe a big one, it takes so long to show the messages and then when you send&receive it looks like it is refreshing ALL the emails instead of just pop up the new ones.

Any n900 mail expert? TIA

Also when it isn't a big mailbox. Limit on 30mb and still same reaction as above. Anyone ideas?