Why does OE 2010 sendextra files

You may have a corrupted or damaged *.dbx file. Here's what you should do. Search your computer for *.dbx files including hidden and system folders. On the Search Results, look for Sent Items.dbx, right click on that file and choose Open Containing Folder. Now create a back-up copy of that file on the same folder and rename it to something like Sent Items.old and delete the Sent Items.dbx. Once you run Outlook Express again, it will recreate the Sent Items.dbx file. Check if this solves your problem. If it doesn't, repeat the steps again but this time, do it on the Outbox.dbx.