No, uninstalling Office 365 doesn't automatically delete your emails, as they are stored on the server (for online accounts like Exchange/Outlook.com) or in local data files (.pst/.ost) on your computer, but you risk losing local data or settings if you don't back up; the app is just the interface, and your emails remain online or in your profile's data files until you delete them or the account. To be safe, always back up your Outlook .pst/.ost files before uninstalling to preserve local data and settings, and ensure your primary emails are safe on the server.
Tip: Uninstalling Microsoft 365 only removes the Microsoft 365 applications from your computer, it doesn't remove any files, documents, or workbooks you created using the apps.
Reinstalling Microsoft Outlook won't delete emails or settings.
If you decide to cancel your Office 365 subscription, you can download your data (for example, your email and documents) and save it to another location i.e personal computer, personal server. We advise you to save your data before you cancel your subscription.
The non-subscription based versions of Microsoft Office 2021/2024 also include the classic version the Microsoft Outlook app, and it requires a one-time purchase if you want to use it. Outlook 2021/2024 can also be sold as a standalone product, but requires a one-time purchase as well.
Outlook has a free and paid version, but the latter isn't available as a standalone product. If you want access to premium features, you need to subscribe to Microsoft 365.
Here are clear and simple cases when Microsoft 365 may not be the best choice: You only make basic files and do not need advanced tools. You do not want a monthly or yearly subscription. You need apps that work fully without the internet.
Important: If you cancel a Microsoft 365 Basic, Personal, Family, or Premium subscription, your storage allowance will revert to 5GB of cloud storage, which includes your OneDrive and Outlook.com attachments, and 15GB of Outlook.com storage.
This happens if Move Conversation is enabled in Outlook. So, you may have to look through all your folders to find the messages that you are looking for. Another possibility is that you have enabled Ignore Conversations on messages from some senders. These messages will now be sent to the Junk folder.
Microsoft 365 Online is a free version of Microsoft 365 Copilot that you can use in a web browser. You can do almost everything with the Microsoft 365 Online apps, but some more advanced features are only available with the Microsoft 365 or Office desktop apps. You can access Microsoft 365 with a Microsoft account.
Office 365 Uninstall and Reinstall Process
The disappearance of Inbox emails can be due to various reasons: Accidental email deletion: Users might have deleted some data files accidentally due to which emails missing from the inbox. Incorrect rules: Incorrect rule settings in Outlook may not lead to Outlook not working properly.
Once the uninstall is complete, sign in again to m365.cloud.microsoft/apps and select Install apps. From the Install apps window select the language and version you want (64 or 32-bit), and then select Install.
No you won't loose your data by uninstalling/reinstalling.
Access for Users: During the expired stage, end users experience no change in service. All users can still log in and use Microsoft 365 apps and services normally, including Outlook email, Teams, SharePoint, OneDrive, Office applications, etc.
Click on the "File" tab at the top left corner of the Outlook window.
Select the Deleted Items folder, and then select Recover items deleted from this folder. Hover over an item and check the box next to it. Select Restore from the Home ribbon.
Solution 1 – Check the Deleted Items Folder in Outlook
First, check the Deleted Items folder for the missing or disappeared emails. It's possible that you may have accidentally deleted the emails from the Inbox folder. If found in the Deleted Items, select the emails and move them to the desired folder.
After uninstalling Microsoft 365, applications such as Word, Excel, and PowerPoint will not be available, which may cause document collaboration interruption or format compatibility issues.
Just like any other subscription, you get a grace period before your account gets deactivated. During this period, you can access the files, emails, and other features of Office 365. During this grace period, you can renew the subscription, failing which, all of your data will eventually get deleted.
When your Office 365 subscription expires, your Microsoft 365 Apps remains installed on the device, but you can only view and print files. All features for editing or creating new documents are disabled, as Microsoft 365 Apps would be in reduced functionality mode, you would also see the reactivatiation message.
Disadvantages of Microsoft 365
Standalone or part of Office 365: You can use Outlook as a standalone email client or as part of the Office 365 suite. Web and desktop versions: Outlook is available both online (Outlook.com) and as a desktop application (part of Office 365).