Hi, I'm John! I will help you with this.
To help narrow down the issue:
- Are you using the built-in Mail app or the Outlook app on your iPhone and iPad?
- Is the issue happening with a particular sender only or are you not receiving emails in general?
In the meantime, if you haven’t already:
- I recommend checking out this Microsoft support article: "Can't send or receive email in Outlook.com" https://support.microsoft.com/office/can-t-send-or-receive-email-in-outlook-com-d39e3341-8d79-4bf1-b3c7-ded602233642
- Please scroll down and take a look at the sections titled "Can’t receive mail in Outlook.com".
- It walks you through some helpful steps that usually resolve this kind of issue.
- Check your mailbox settings to confirm nothing is filtering or blocking those emails.
- Make sure your Focused Inbox is turned off, so all messages show in one place. https://support.microsoft.com/office/what-is-focused-inbox-16b24373-dfa9-4139-ab19-08aa753a6055
- Try adding their email addresses to your Safe Senders list to make sure Outlook doesn’t block or redirect them. This steps should perform in Outlook Web https://support.microsoft.com/office/add-recipients-to-the-safe-senders-list-in-outlook-be1baea0-beab-4a30-b968-9004332336ce#picktab=outlook_on_the_web
If the issue persists, please provide more details by answering my questions.
Click "Add comment" below to let me know.
Regards,
John J.D.