Not sure if anyone else has come accross this butby default horde does not save attachements in th sent items folder - e.g. if you send an attached pdf it sends it to the recipient but strips it on the way to the sent items folderyou have to set the option in the client configurationyuck !
7.3 does not have webmail set to automatically save attachments in the sent message folder, however on the mail composition screen it gives you the option to save the attachment with the message.
That is correct and is in fact the default setting for horde. If you want that feature enable for all of your users by default, you can create a custom-template in imp/config/prefs.php. Edit 330save_attachments. I do believe if a user has already logged in and specifically changed their setting in options, then changing it in prefs.php won't have any effect.John