Outlook 2010 & 2013
1. Click the File tab > Account Settings
2. Click Account Settings
3. Select your email account
4. Click Change...
5. Click More Settings...
6. Click the Advanced tab
7. Uncheck the box next to "Leave a copy of messages on the server"
- Alternately, leave that box checked but check the box next to "Remove from server after" and select a time period. This ensures that if you have the account configured on multiple devices, you will still be able to access the message for a long enough to download it to all devices before it is deleted from the server.
Outlook 2007
1. Click Tools > Account Settings
2. Select your email account
3. Click Change...
4. Click More Settings...
5. Click the Advanced tab
6. Uncheck the box next to "Leave a copy of messages on the server"
- Alternately, leave that box checked but check the box next to "Remove from server after" and select a time period. This ensures that if you have the account configured on multiple devices, you will still be able to access the message for a long enough to download it to all devices before it is deleted from the server.
Thunderbird
1. Click Tools > Account Settings
2. Select Server Settings under the correct account
3. Uncheck "Leave messages on server"
- Alternately, leave that box checked but check the box next to "For at most" and select a time period. This ensures that if you have the account configured on multiple devices, you will still be able to access the message for a long enough to download it to all devices before it is deleted from the server.