Why isn't SMS marketing bigger than email marketing?

Anyone that's worked on SMS marketing campaigns has seen incredible response rates and conversion rates. It's extremely common for the SMS list to convert at 3x, 5x or even 10x the rate of the email list. 

We've all wondered, why is there so much more attention and resources paid to email campaigns, when the SMS campaigns are doing so much better.

That's the question we pull apart in this episode of The Chat Bubble. After all this success, why isn't SMS the dominant & default digital marketing communications channel?