We recommend you to leave a copy of messages on the server only for a specified period of time and the maximum period should not exceed 14 days. E-mails can quickly accumulate and can affect your email account and it might stop working.

Outlook 2010

1. From the menu bar, select "File" tab
2. Select "Account Settings", and after select "Account Settings"
3. When the window opens, select the email account
4. In the "Account change" window, select "More Settings", situated in the bottom-right corner
5. Select "Advanced" tab
6. Under "Delivery", check/uncheck "Leave copy of messages on server" as you want to use and click "OK"

Note: E-mails can be deleted from the server when using POP3.

Outlook 2007

1. From the menu bar, select "Tools" tab
2. Select "Account Settings"
3. When the window opens, double click  on the email account
4. In the "Change E-mail Account" window, select "Advanced" tab
5. Check/uncheck "Leave copy of messages on server" as you want to use and click "OK"

Thunderbird 

1. From the menu bar, select "Tools" tab
2. Select "Account Settings" from drop down list
3. In the panel from left select "Server Settings"
4. In the section from right, check/uncheck "Leave messages on server" as you want to use and click "OK"

Windows Live Mail

1. From the menu bar, select "Tools" tab
2. Select "Account Settings" from drop down list
3. When the window opens, select your email account
4. Select "Properties"
5. Select "Advanced"
6. Check or uncheck "Leave copy of messages on server" as you want to use
7. Click "Apply" and"OK"