@FabianMH let me know about a new and free app he released called LaterFlag.

LaterFlag is an application that let’s you flag your emails.

You can either flag it as high priority or low priority or just leave it normal! Through this you won’t forget if you already have replied to emails or not. It’s free, you’re gonna love it!

Select a Message and click the Menu and then Flag Mail. If you click the Menu a few times it toggles between the Flags. There is no icon for the app, it’s just on your device in the Messages Menu.

It’s so simple yet it’s a very useful application that I’m sure many of you will appreciate.

LaterFlag is available as a free download in the store for all BlackBerry devices running OS 4.5 and higher. Fabian also has a bunch of other applications (both free and premium) that you should definitely check out.