How do you turn off a cell phone's inbox limit?

I have a Verizon Wireless Voyager and I pretty much text 24/7. I constantly have to delete all of my messages and it gets really annoying. So how do you turn off the inbox limit so you don't really have to delete them?|||idk but tell me when you find out. i text a lot too.|||dial *611 and ask them...they are very helpful..good luck