
Every year. Every fracking year.
Short and sweet: Mars won’t look big to the eye (the email says, not very clearly, that through a telescope mars will look as big as the Moon does to the eye) in August. It never gets that close. It won’t even be particularly bright in August; it’ll shine at magnitude 0.4 or so, roughly as bright as the star Aldebaren, which in fact is just a few degrees from Mars in the sky (they make a nice pair, too, since they are both ruddy in color as well).

As you can see in this image, in August Mars won’t be at its closest to Earth, and in fact will be about 180 million kilometers (over 100 million miles) away.