Small tool to fix the IMAP internaldate
in case it's too much off compared to the last date
stored in the received lines.

F.e. some IMAP clients tend to reset the imap internaldate
when you move a message between folders.

Features:
- Configurable tolerance
- Test mode: Show only what would be done
- Statistics: How many messages it would modify per user / folder
- Log file with all actions
- Caching

*** TO DOCUMENT ***
- Prerequisites
- How to invoke
- Invocation on Windows