Historical clue formulations

• Still in the outbox — 2016-01-10
• Like draft e-mails — 2012-11-11
• Waiting to be mailed — 2007-09-03
• Like just the draft of an e-mail — 2005-09-15
• Still in the out-box, as mail — 2004-08-02
• Still waiting to go out — 2004-07-10