Western Union developed the sentence, “The quick brown fox jumps over the lazy dog” as a test for their telex operators, and it’s thirty-five letters long.
However it isn’t the shortest English sentence ever created using all the letters of the alphabet.
That honor of shortest English sentence created using all the letters of the alphabet belongs to the sentence,
“Jackdaws love my big sphinx of quartz,” which was authored by an anonymous scholar and is just thirty-one letters long.
Pangrams are sentences using every letter of the alphabet at least once.
Aside from the missing letters pointed out by a previous comment there is at least one sentence that only uses each letter ONCE. I think there are more than one, in fact.
Read a little more closely: “F” is in “of” and V is in “love”.
I don’t believe there is any such sentence described by JiffyPop (using each letter only once). There are far too few vowels for that to work. There might be a sentence using each consonant only once – the given sentence comes close, with only one extra “s”.