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This is silly. There are a number of ways to try bugging emails; this uses one of the oldest, and it doesn't work in much of anything anymore by default. On to
by thaumaturgy 15y ago
This is silly. There are a number of ways to try bugging emails; this uses one of the oldest, and it doesn't work in much of anything anymore by default.
On top of that, SpamAssassin hates it:
X-Spam-Status: No, score=3.7 required=5.0 tests=HTML_IMAGE_ONLY_08,HTML_IMAGE_RATIO_02,HTML_MESSAGE,MIME_HTML_ONLY,NO_RECEIVED,NO_RELAYS,T_DKIM_INVALID
...so they didn't bother to MIME-format the message correctly with a text component. I know from experience that this can cause your message to be blocked completely by some email services.
Phooey.