Using New Outlook on Windows for personal email, calendar, and contact management
In new Outlook for Windows, older email often does not appear because only a limited amount of mail is saved offline.
Try these steps:
- Open new Outlook for Windows.
- Go to Settings > General > Offline.
- In Days of email to save, choose a longer period.
- Select Save.
If the missing messages might be in Deleted Items, also check:
- Go to Settings > General > Search.
- Under Search results, make sure Include deleted items is checked.
- Select Save.
In classic Outlook, the equivalent setting is:
- File > Account Settings > Account Settings.
- Select the account, then Change.
- Under Offline Settings, move the slider to a longer period or All.
- Restart Outlook.
By default, Outlook often synchronizes only part of the mailbox. In classic Outlook with Exchange or Microsoft 365 accounts, the default is commonly 12 months, and older items remain on the server until more mail is synced locally.