Historical clue formulations

• Answer — 2026-03-30
• Opposite of forward? — 2025-04-09
• Left-facing arrow, in an email — 2020-05-29
• ___ all (email button) — 2019-02-25
• Thread part — 2016-12-23
• Answer — 2013-12-16
• Email option — 2013-11-19
• Answer — 2011-10-31
• E-mail button — 2011-01-02
• E-mail option — 2009-11-27
• Come back — 2007-05-11
• Answer — 2006-07-31
• It's much requested — 2001-01-06
• E-mail option — 2000-12-27
• E-mail option — 1998-11-15