Re: kmail issue/feature request

>AFAIK, if you have an IMAP account, akonadi will not keep your mails on your 
>local system, only header information for use in the mail list in the client, 
>unless you check "download all messages for offline use" in the settings.

True but I don't know if the default isn't to download the entire message.

There's also an option to control how long content is preserved (cached).

However, these are per-folder properties and it's not always clear how to apply them to an entire account.

(as usual this is about the 4.1x versions so things may have changed subtly in the current version.)