I have just started using MS Office 2010 for emails after having been on MS Office 2007 for a long time. One of the sad things is that it is not technically possible to compile all incoming or outgoing emails to the same account. The difference between MS Outlook 2007 and 2010 is that now all incoming emails is placed in the separate account email folders. The fix for this is to establish Rules which moves incoming emails and sent emails to the same folder. I have set these up, but they do not work for very long and errors are appearing after almost every time I do a send/receive email. I have tried everything to get them to work properly and consistent, even trying to repair the PST files etc. but nothing works. I can get the rule to work but after a few updates then one or the other rule fail and come out with an error. Also once the rules operate they move emails to the wrong folders even. So incoming emails are moved to sent folders even thought that is totally against how the rules are set up. So something really strange is going on in the kingdom of Outlook rules. Is there a patch or fix available that will fix these problems with rules not working properly and consistently over time?

One of the sad things is that it is not technically possible to compile all incoming or outgoing emails to the same account.

It is possible, so while I don't know why your rules aren't working...

If you go to File, Account Settings, Account Settings..., you'll obviously see a list of your mailboxes displayed in the E-mail tab. If you have multiple mailboxes setup it defaults to each of them having their own PST/OST file, but that can be changed.

Select the mailbox you want to change (any EXCEPT the "default" account), and at the bottom of the window it will show "Selected account delivers new messages to the following location", and a "Change Folder" button. Click that and then select the Inbox folder (of subfolder) within whichever account you want all of your email to be delivered, followed by OK and Close. From now on all new email received for that account will be delivered to the selected folder. Additionally, all sent email is automatically saved into the selected mailboxes Sent Items as well.