This email means other things, too. It means I followed this agent's submission guidelines closely enough to deserve a minute of someone's time and an actual reply. It means I can go on to the next potential agent. Oh, and it means I have a manuscript.
That last one may seem obvious, but writers sometimes forget how far they've come. Getting my first rejection is a pretty high rung on my ladder to publishing success - above writing a novel, rewriting a novel, editing a novel, and repeating the process with a query letter, which is much harder. So for today I'm celebrating the view from this lofty height.
And tomorrow? I guess it's already time to query a few more agents. Wish me luck!