08-29-2010, 07:06 PM
Join Date: Jul 2005
Location: Florida Panhandle
Carrier: T-Mobile USA
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I'm not familair at all with Horde, but here's my thoughts:
If you have your BIS settings for that account set to sync with the account inbox, and you are removing those messages from the service, then perhaps BIS is removing the emails from the handset when they are removed from the server. I don't know if this is even possible, but you should have no trouble running an experiment.
Is it really within a day? The email folder options can be set to remove messages after a certain period of time, down to 15 days. If you are really losing messages only after a day, then that wouldn't be it.
Last thought is memory. The device will delete some data, such as messages, when memory is allowed to get too low. I don't think you would see that on just one account and not others, but I don't really know. Check you free memory value.