Does anyone know if the Date Filter Error can be suppressed in VersMail?

I have quite a lot in my inbox, and don't want to get an error every time I check mail just because I don't want 500+ messages on my treo 650.

Also, does anyone know if VersaMail can be setup like the Treo 600 Mail application to only get messages that are new since the last time mail was checked?

Thanks in advance,