We’ve just updated all plugins and the drop uploader and I recognized that the temporary files in /wp-content/uploads/cf7du_temp are not deleted after the e-mail is sent.
We’ve not checked any option for storing the files neither in the general settings of the drop uploader or in the contact form settings.
The e-mail is sent correctly with the attachement(s). But one strange issue is also happening: The “E-Mail(2)” of CF7 has no content in the attachment field but the attachement(s) are also sent to the receiver of the “E-Mail(2)” and we can’t change that.
I checked the other installation of Drop Uploader we use.
It’s the same there – files are not deleted after they’re sent. So they seem to be stored on the server forever. I think that should be fixed as we didn’t set an option to keep the files on the server.
The “E-Mail(2)” issue can’t be tested there as we don’t use this option of CF7 there.