"Opera does not integrate properly with outlook (full outlook not IE) .."

?? Why would Opera want to integrate with Outlook? The whole point of getting away from Microsoft stuff is ...ummm... to not use EITHER Outlook or IE. (I used Outlook about 12 years ago...for a few weeks, then just didn't like either its interface or its attitude.)
Opera has a decent email client built in, though I almost never use it. If you are locked into IE/Outlook stuff thru work or something, I guess you just cope. If it's only 'what you're used to and what came with the computer', it 'might' pay to try the alternatives.