Probably the most requested feature of Google Wave has been delivered yesterday. It is simply to get email notification when a Wave changes.
It is quite easy to start to use. Simply select the dropdown button on your inbox, select notifications. Then you have the option to select how often you want the notifications.
The email you then will get looks like the following.
One feature missing feature is that it is not possible to look for updates in the inbox. I might only be interested in updates in Wave, when a search term is updated. So I only get updates when Waves with the word SAP or the tag SAP is updated.
I currently use Google Wave Notifier to get updates, when a Wave is changing. The program gives instant notifications when your inbox changes. It is quite useful. But it is probably not a solution for non-it savvy users how don’t want to install all kinds of addons.