The search feature is far from perfect, no doubt, and we feel your pain.

Personally, if confronted with a search challenge like the one you present, I would attempt to identify one unique term in the email and perform a search on that term, under the assumption that someone else might have also posted the text of the email. In this particular case, because the promotion doesn't have a name or an associated number, I would have picked one of the telephone numbers listed. In fact, a simple search on "1-800-450-4442" delivered the correct thread in the top two choices (this thread was the top choice ).

Again, not perfect, but workable.