Data entry / email marketing test

This is an easy, repetitive task that involves locating players on an online game site and sending them a message you cut and paste in the email system and repeating hundreds of times.
I want to be able to contact enough people to test out several email marketing campaigns to drive traffic to my site. I want to figure out which campaign works the best.
Please indicate how long it would take to do 1000 emails in this way. So I want to do a test of 100 emails to start - eval, determine total time, look at cost and determine if it's affordable. Must be willing to sign up for the online game (it's free) because this has to be done while in the game community to be able to locate and email a player.
Thanks.