AfterOpenSaveIDML, a FREE InDesign script that silently creates an IDML backup of the document being opened.

The backups are named, document name + month + day + hour + idml.

You can download the beta version of the script here.

To install the script copy the file to your startup scripts folder and restart InDesign.

You can contact us.

Keep up to date with what we are working on TWITTER.

Limitations: currently limited to InDesign 5, 5.5 and 6. Not tested in CC or CC 2014 ( probably works. )