RM, I've a few pre-printed rejections in my time. They only serve as a reminder that agents are swamped with material, and as unpulished unknowns we are right at the bottom of the food chain - not a pleasant feeling, but one that motivates me to try and change that.
The low point for me this year came after I sent a very carefully composed letter, indicating that I thought that as the agent in question had once worked in the City (the setting for my novel) they might like to read the material I'd enclosed (and this was to an agency that does accept unsolicited work). Six weeks later I got the material back without even a covering letter. I could name and shame, but I'm not that petty. And I have moved on
Anyway, good luck RM.
Adele
<Added>sorry about the typos - I promise that my work is at least spell-checked before I send it out!