Clean Email

Clean Email connects to most email providers, including Gmail, Outlook, Yahoo and iCloud, and shows your mailbox grouped in ways that make bulk decisions easy: all mail from one sender, all social notifications, all messages older than a year with large attachments.

From there you can delete, archive, label or mark as read in one step. The Unsubscriber lists your mailing lists and lets you stop them, and Auto Clean rules keep doing the same job on new mail, such as archiving receipts after a month. A screener can hold mail from new senders for your approval.

It works in the browser and has mobile and desktop apps. It needs access to your mailbox to work; read its privacy policy, and check the current plans on its site.