IPhone users: I got a text from an email?

So i have the iphone 5s, and it's my first iphone. I'm still kinda new to its features. Last night randomly at around 2am i got a text from an email (like a jibberish email it seemed) and it just said " ".So pretty much nothing. From what i know when i used my ipod, text messages from emails usually means it came from other iphones that set itself to send as their email or ipods right? I'm only asking because if that person sent the text through the email connected to my phone, I'm creeped out since no one knows that email. The person never responded when i asked who they were either. I'm just creeped out since occasionally I get messages/calls from people i don't know.

Hmm.

No big deal it happened

Your cell phone has an email address. It usually (your number)@(your carrier).com