Change How Much Mail to Keep Offline in Outlook (2024)

By default, Outlook configures Exchange and Office 365 accounts to only synchronize 12 months of your email.

1. ClickFile>Account Settings>Account Settings.

   

   See Also

   How to Find Old Emails in Office 365Gmail Archive: What is it, How, and Why should you archive your emails?How do I find the oldest email in Gmail? – FIT Information TechnologyHow to search by date in Gmail to find older messages

2. Select an Exchange or Office 365account, and then clickChange.

   

   See Also

   Why Have My Emails Disappeared from My Inbox? - How To Fix

3. UnderOffline Settings, move the slider to the desired amount of time, such asAll,12 months,6 months,3 months, or1 month. Note: If you're using Outlook 2016, you can also select an amount of time as short as3 days.

   

   For example, if you move the slider to3 months, only mail from the past three months will be synchronized to your Offline Outlook Data (.ost) file from the Exchange server. Items older than 3 months reside only in your mailbox on the server. You can change this setting at any time.

Source: https://support.office.com/en-us/article/work-offline-in-outlook-f3a1251c-6dd5-4208-aef9-7c8c9522d633