Sending, receiving, and organizing email in Outlook.com
Hi @jk
I’m sorry you’re experiencing this. A sudden flood of unsolicited emails, followed by missing Inbox messages and interrupted delivery from familiar senders, may indicate that someone has accessed the account or changed its mailbox settings.
Please take the following steps using Outlook.com on a computer:
- Change your Microsoft account password immediately and review Security > Recent activity for any unfamiliar sign-ins.
- In Outlook.com, go to Settings > Mail > Rules and Forwarding. Remove any rule or forwarding address you do not recognize.
- Check Deleted Items, Junk Email, Archive, and the Other tab for the missing messages.
- In Deleted Items, select Recover items deleted from this folder to check whether the disappeared emails can still be restored.
- Avoid clicking links or using the unsubscribe option in suspicious emails. Report them as junk instead.
Because the same issue appears on Outlook.com, it is likely related to the mailbox rather than only the iPhone app. Once the web mailbox is secured, you can remove and re-add the account on your iPhone if it still does not synchronize correctly.
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