Google Apps Update: Download options for Offline Gmail

You now have more options to configure offline settings and manage messages for offline use.

Editions included:

Standard, Premier, Education and Partner Editions

Languages included:

All languages supported by Gmail Labs

How to Access Gmail Offline

In your Gmail settings, go to ‘Offline’ if you have offline enabled.
– In ‘Download options’, select the timeframe for messages you want to download for offline use e.g. 4 days, 1 month etc. The timeframe that you choose will then show under the options when changing offline label settings.
– Click on ‘Change label settings’ to modify which labelled messages you download for offline use. For a particular label, choose between ‘All’, ‘Timeframe selected’ or ‘None’.

For more information:
https://gmailblog.blogspot.com/2009/11/choose-which-messages-get-downloaded.html