This question has probably been answered, but I couldn't find it... I know that for freelance work in magazines, sending out queries to a variety of magazines is a no-go. But what about when I am looking for an agent for a book? Do I send out the query to one agent at a time and wait for a rejection before sending it to another one? Or is it OK to send it out to 10 agents at a time? Thanks for any help you can give me!
Mail away. You never know when you will hear from them or if you will hear from them... However keep in mind that by sprinkling them out you catch people at different times instead of all at the same time.
Think about things like 911- you might not have heard from anyone after that and what think... Did they read it, didn't they read it? Did it get thrown away? Or think about summer vacations- is everyone taking them? Might not hurt to spread them around over a couple of months.
I just finished my first nonfiction book. I did research to figure out who were my best options as agents for my genre. I then started with those that seemed less likely but represented some books in my area only to see if I learned anything from the query before I approached the perfect right agents for my material...
But I usually do things rather methodically. I certainly have read people taking the shot gun approach and just blasting them out there...
Either way: ready, aim, fire! Good luck!