CKEditor inline styling issue in Outlook

I've just integrated CKEditor to our newsletter editor. But now my concern is that it probably won't work well due to inline styling over the html attributes with CKEditor. Microsoft Outlook and some of other email clients do not support inline styling in emails. I have already updated the image plugin to switch the inline styling to attributes. But don't know how many other code need to be updated. Besides updating source code is not a good way to fix the problem - it would make it harder to upgrade.

Is there a plugin that can completely fix this issue for CKEditor?

Thanks,
Jenny