Are you thinking something other than text messaging that all the kids do and "don't text while driving"? There are maybe two people who send me texts but it works well. Short sentences, no embellishment or pleasantries -- Question, Answer, maybe a short comment. Mine are usually longer than typical because I like complete sentences/thoughts with correct speeling.

Do 9-1-1 centers accept and respond to text messages? I'm thinking they do not.

My work emails are entirely text -- no graphics, no font options. Everybody knows everybody and it's easier than calling to make sure that all concerned have the same info. Text only emails are very small, probably measured in kilobytes.