You can open attachments in other Apps. Either:
- Firstly, extract the attachment to WinDat Opener's local storage. From there, you can touch-and-hold on the attachment to open a menu of possible actions. NOTE: you may have to select "Share" to see the full list of possible Apps.
- Alternatively, if your device supports drag-and-drop, you can simply drag the attachment to whichever App you'd like to open it with.