The sent item folder is not created automatically in Horde Webmail. You will need to create the sent Item folder to save the sent mails. You can take below steps to create the sent items folder for the mailbox. 1. Login to the mailbox though IMAP 2. Click on "Mails" and then select "options" tab. 3. Select "Personal Information" link under the general option. 4. Then select the check box "Save sent mail" and select "create a new sent mail folder" option. 5. Provide the name to the sent items folder and Save the changes. This will make the sent item folder into the mailbox. And when you compose any mail please check there are ---option to save the copy of message in sent item ---option to save the attachment in sent item
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