Microsoft is replacing classic Outlook, gradually, and now even more gradually if you can believe it. The long-running desktop Outlook app is being replaced with a newer client called Outlook for Windows, with the goal of unifying Outlook across Windows, web, and mobile.
However, that transition does not appear to be going as smoothly as Microsoft hoped. It was recently revealed that the opt-out phase of the migration has now been pushed back by at least another year.
