One deletion email a day, not one per pause

A sandbox with :retention days of its own is a day or so from deletion after each idle pause, and its owners were emailed a warning on every pause, though using it again cancels the deletion. Warnings for dates you set this way are now emailed at most once a day for the account, listing every sandbox due, and never once a sandbox has woken or paused again since; the email says its own retention chose the date, and null keeps it while you have credit. See pricing.