and I also would not object to someone inventing a widget for wordlessly indicating in emails "and this is the last email I want to send on the matter please don't respond." anyone?
@loriemerson
How about:
-30-
Morse code abbreviation: SK
...—.—
@loriemerson replace your final fullstop with a small stop sign? 🛑
New character glyph perhaps…?
(It’d have to be red
[and read], though.)