Suggestion: do NOT put possibly changing information in the SUBJECT LINE of a mailing list email.
GOOD: Rockville 16 Jan 2020
BAD: NO GAME
That way we don't get emails that say:
Rockville: NO GAME
GAME ON!!
Also, you may have to occasionally edit a subject line so it makes sense.
You don't want to be known as "that person" who abuses the subject line.
Biggie