Automatic DIR creation when mailed with Subject

Hi SAP Gurus,

We Have a requirement where an user sends a Mail with the subject line as the DIR No (particularly the Document folder No in EDMS) with some document files attached to it,

The requirement is, based on the mail sent the system should create a DIR in DMS with the attached files placed inside the DIR automatically with out any manual interventions.

So we can have a list of DIRs created under one folder in DMS.

Please Explain in detail like how this requirement could be met, if it is an development also throw some light on the methord to be followed.

There are some scanner interfaces available in the market but we are not sure to go for any third party integration for getting this single requirement fullfilled.

Points awaiting for usefull suggestions

Thanks and regards

Priya S