SLIM Companion Email Manager generates unique file names based on the file name and the sent date. This way unintentional overwriting of existing emails is prevented.
Note: the email metadata property Conversation (or it's equivalent for eml files) is also extracted. This allows for using the conversation in views to sort or arrange emails.
Note: emails transferred from Outlook via the desktop to SharePoint are named <subject>.msg and replies are named with a sequence number like <subject> (1).msg, <subject> (2).msg etc....
Email metadata such as received date and conversation is not extracted. This makes finding emails archived in SharePoint a time consuming and tedious activity.