Crossword Answer spamfilter

Here are all the crossword puzzles and clues where the answer spamfilter appeared.

Clue
Puzzle
Date
*Program that detects junk emails
New York Times
Sep 26, 2023
E-weeder?
Universal
Apr 1, 2023
Email service, and a hint to how to interpret the starred answers
Wall Street Journal
Mar 9, 2023