*Please help me* Using Interspire Marketing

Hello all....I use GoDaddy for my shared host and it limits me to 999 emails a day through my server mailhost and I use interspire email marketing to send emails to my clients and other opt-in leads (I am 100% spam compliant) but I can't seem to get around the 999 a day. I am forced to use a program I had to get to send the rest (I send 10,000 a day) and the program uses my isp's direct send but the thing is I want to use Interspire as it automatically unsubscribes and keeps statistics...is there anything I can do or any suggestions anyone can give to me?

Thanks in advance again for your help and input...!