To set webmail to save "sent" messages, click on the "Options" icon after logging into webmail. Click on the "Identities / Email Addresses / Signatures" link. Click "Edit Your Identities" then select the identity you wish to change from the dropdown menu. Check the box next to "Save sent mail" then choose the folder where you want your sent messages to be saved. Click "Change" to save your new settings. Please note that you must repeat these steps for each of the identities that you wish sent mail to be saved.