Before You Start

What is caching?

Caching information means that it is saved in a more convenient location so that an application or connection runs faster. For email, caching means that your emails are stored locally on your computer, rather than in a server, so they are easily retrieved through an email application such as Outlook. To save storage space, Outlook caches email based on time: while more recent emails are cached and therefore easily accessible, older emails are often not cached and stored on the server. However, you are able to change these cache settings if you so choose.

Outlook for Windows

1. Open the Outlook app on your computer.

2. Click File.

3. Click the Account Settings button and then select Account Settings from the drop-down menu.

4. In the pop-up window, you’ll see a list of any email accounts you currently have open in the Outlook app. Double-click on the email you’d like to change the cache settings for.

5. Make sure the Cached Exchange Mode checkbox is checked.

6. Using the slider, indicate which emails you’d like cached (or stored locally).

   1. Example: if you select 1 year, all emails sent/received during that time period will be accessible via the Outlook app rather than stored in Microsoft’s server. However, after 1 calendar year, those emails will be stored in the server and may not be immediately accessible via your Outlook app.

7. Click Next.

8. Close and re-open the Outlook app for changes to take effect.