Historical clue formulations

• Email addenda, for short — 2021-08-04
• Letter addenda, for short — 2020-05-11
• Often-overlooked email parts, briefly — 2017-02-08
• Additions after closings, in brief — 2017-01-20
• Correspondent's afterthoughts, briefly — 2016-06-21
• Brief afterthoughts, in brief — 2015-08-28
• Remarks akin to "btw" — 2015-05-17
• Ltr. addenda — 2013-06-06
• Signature followers, for short — 2012-11-18
• Some addenda, for short — 2012-11-15
• Letter add-ons, for short — 2012-10-08
• They go below signatures, briefly — 2012-05-25
• Letter endings: Abbr. — 2010-10-01
• Endings to some letters, for short — 2010-07-10
• Letter addenda: Abbr. — 2009-02-22
• Followers of closings: Abbr. — 2009-02-20
• Letter addenda, for short — 2008-01-27
• Ltr. additions — 2006-10-31
• Endings to some e-mails — 2006-05-26
• Ltr. addenda — 2005-10-26
• Mail addenda, for short — 2005-08-14
• Brief letter additions — 2005-06-02
• Some afterthoughts, in brief — 2005-04-21
• Letter add-ons, for short — 2004-05-20
• Certain addenda: Abbr. — 2003-12-07
• They're not part of the body: Abbr. — 2003-04-26
• They follow closings: Abbr. — 2002-08-24
• Supp. writings — 2002-03-12
• Letter add-ons: Abbr. — 2001-12-23
• Ltr. addenda — 2001-06-20
• Letter writer's afterthoughts — 2001-05-28
• Letter addenda — 2001-05-11
• Add-ons: Abbr. — 2000-11-29
• Some scribbles, for short — 2000-09-23
• Ltr. additions — 1999-08-11
• They go below signatures, for short — 1999-05-12
• Ends of letters, briefly — 1998-05-24
• Quick addenda — 1998-05-16
• They follow signatures — 1997-12-28
• They're not part of the body: Abbr. — 1997-06-06
• Letter addenda — 1996-06-21
• Letter addenda — 1995-12-24
• Letter endings: Abbr. — 1994-10-18