OutlookThe new Outlook, which was initially only available to beta users, has been available to the general public for some time now. Whether you should switch from classic Outlook to the new Outlook cannot really be answered with a "yes". In any case, here are some facts on the subject - especially since Microsoft will gradually begin rolling out the new Outlook for all MS 365 plans at the beginning of 2025 ( for more information from Microsoft, see here ...).
The new Outlook is primarily intended to replace the mail application integrated in Windows 10/11, but also, in the long term, the classic Outlook included in the Office package. It is a newly developed Electron application that (for Microsoft) has the advantage of being cross-platform. In any case, this Outlook is still in the "work in progress" status, with new functionalities being added all the time (either those that are really new or functionalities that the new Outlook does not yet have compared to the previous classic Outlook).
In principle, it is possible to use it in practice; an overview of already integrated and planned adaptations can be found on Microsoft's roadmap page .
But there are also some really drastic changes in the new Outlook that aren't so nice. The new Outlook isn't just a new program interface, it also changes basic concepts that you know from australia whatsapp number data the classic Outlook. The new Outlook will no longer support VBA (Visual Basic for Application) or COM add-ins. This means that there is no longer any option for your own macros to automate tasks or workflows, and it will also no longer be possible to "remotely control" Outlook from other Office applications such as Word etc.
The fact that COM add-ins are no longer supported is just as “dramatic” because, firstly, all Outlook add-ins developed to date can no longer be used and, secondly, all Outlook controls from classic third-party applications will no longer work.
So far, no alternatives are known for these “problems”; the new Outlook is supposed to support JavaScript-based web add-ins, but it remains to be seen whether this technology will be able to cover the requirements described here.
What the new Outlook also lacks are email profiles, which can be used to separate business from private accounts, for example.
And even more serious are problematic data protection aspects. On the one hand, the access data is transferred to Microsoft servers when using an MS365 or Outlook.com account, but on the other hand, in the new Outlook this is also the case for Gmail or IMAP and POP accounts! In this case, the emails are retrieved via Microsoft servers, on which the access data is also stored.
Meanwhile, major software manufacturers are already recommending that you do not use the new Outlook for the time being or that you deactivate the automatic switchover. Here are instructions from DATEV for preventing the Outlook switchover or here from Smarttools.de .