Default sending text to email?

hi, i have a us cellular gs3 (no section for us cellular gs3) running aokp_dcusc_jb-mr2_milestone-2 and i'm having trouble sending texts to an email, i've never had this problem in the past with any phone or any other rom on this phone. what its doing is trying to send it as a mms instead of a text. i'm not sending a pic just a few words. i'm using the default message app "com.android.mms version 4.3.1-eng.sethyx.20131218.013055". i've tried other messaging apps and they're all doing the same thing. i'm on page plus and my data is in and out so i have my data turn off all the time, even still i've been able to sent texts to an email without data as a text not a sms. any help (besides suggesting to switch roms) would be greatly appreciated.