Using older versions of Outlook for Mac for personal email and calendar
Since this is happening across iPhone, Mac, and Outlook, first determine whether the messages are missing from the mailbox itself or only from Outlook for Mac.
- Check the mailbox in Outlook on the web.
- If the missing messages are visible there, the problem is likely sync or display in Outlook for Mac or on a device.
- If the messages are also missing there, the mailbox is likely moving or filtering them before Outlook for Mac shows them.
- In Outlook.com, check the common places where mail is hidden:
- Other tab if Focused Inbox is enabled.
- Junk Email folder and Junk Email settings.
- Deleted Items.
- Filter > Sort > Date to make sure messages are not appearing out of order.
- Check whether email forwarding is enabled.
- Check whether any email rules exist.
- Since no rules are visible, also check whether another mail app or device is affecting the mailbox.
- This is relevant because the issue appears on multiple devices.
- Temporarily turn off mail sync for the account on iPhone, then send a few test messages and watch the mailbox in webmail.
- Re-enable one device at a time to see whether one device is causing messages to move or disappear.
- If the account is Outlook.com and mail is missing from the inbox, also check whether messages are being marked as junk by another email app.
- In Junk Email, if a message is there, select Report > Not junk.
- If Focused Inbox is on and the message is in Other, move it back to Focused inbox.
- If the problem is only in Outlook for Mac, use the Outlook for Mac troubleshooting path.
- Start with the Outlook for Mac guided support tool.
- If the account is Exchange in Outlook for Mac, use the Exchange-specific missing mail help.
- If Outlook for Mac is failing to sync because of account or connection settings, verify the account configuration:
- In Outlook for Mac, go to Tools > Accounts.
- Select the account and confirm the email address, user name, and password are correct.
- If this is a POP or IMAP account, incorrect SMTP/server settings, a blocked SMTP connection, proxy requirements, or an unavailable mail server can also cause send/receive problems.
- If none of the above changes the behavior, use Outlook.com support from within Outlook.com or the Outlook.com troubleshooter.
- Can't send or receive email in Outlook.com
- Email is missing from your Outlook.com inbox
- Email is missing from your Outlook.com inbox
- I can't send or receive messages in Outlook for Mac
- I'm not receiving email or other items in my Exchange account in Outlook for Mac
- I can't send or receive messages with Outlook for Mac