Yes, you can copy your mailings.
After entering the Pitch module, which allows you to distribute mailings to the contact database, in the Mailings tab, you can see the list of your shipments:
You will find here your sent mailings and with a different status, e.g. Draft and Scheduled ones.
After hovering the mouse cursor on the title of the mailing you can see an additional menu:
After clicking on the menu, select: Duplicate to copy the mailing.
At the very top of the mailing list, a new draft mailing will appear. All data, except Recipients, is copied.
You can copy mailing regardless of its status, i.e. scheduled mailing can also be copied.