Inbox Airlock

Inbox Airlock is a light-touch yet insanely effective Gmail add-on for busy people who struggle with their email. Instead of automating email processing, it obliterates the need to do most of it.

Less important emails or new, unknown senders get stashed in an Airlock folder, reserving your Inbox for important stuff only. Nothing is ever deleted or lost. You can redirect emails from a sender or their entire domain to your Airlock folder or your main inbox by assigning a Gmail label.

You can also set up reminders for when you forget to check the Airlock folder.

Inbox Airlock works with any email client.