Clean up a company you've stopped using

Testing a second offer, or setting one up and changing your mind, used to leave a company in Settings you couldn't remove once it had a mailbox attached — deletion was blocked until you disconnected it manually first.

Now, deleting a company automatically disconnects any mailbox still linked to it as part of the same action. The only thing that still blocks deletion is a company with real campaign history, since that history needs a company to stay linked to — everything else can go with one click.