how many emails can send throught asp.net

hi!

i have to send newsletter to clients.

i am using asp.net to do this.

my code is working. no probs.

i have tested my code with a limited emailids (eg.20). but my clients total no. of emailid is around 6000.

so i want to know how many i can send thourgh this code. i am using ms access(Email List)  as db.

please suggest me.

thanks.
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