Query sorting email on leaving blueyonder (google/virgin).On Apple Mail 9.3, El Cap. I'm leaving blueyonder.co.uk (virgin email - about to close down). Is it safe to move emails from top-level mailboxes & those below ’blueyonder.co.uk’ including Google Mail - into mailboxes below ‘On My Mac’? If I then delete the ‘All Mail’ within Google does that delete master emails? i.e. would i lose my new copies?