Sometime Today, Sujeet Bhatt assembled some asciibets to say:
This seems to be the default behaviour in Thunderbird. I would prefer to use the "proper" quote characters, too, but can't figure out where
Ok, the quoting you're using right now (from Thunderbird), is correct. The quoting you used earlier (which put tabs instead of >) was non-standard.
Where did you send that mail from?
Philip