Standard text message delivery is sent over the internet using SMTP Email-to-Text technology. This technology is not supported by the cell phone carriers, making this technology unreliable as text messages can be caught in spam filters. Express Delivery messages are sent through our short code directly to the major cell phone carriers. Express delivery is speedy and reliable. It is the same as sending a text message from one cell phone to the other. We provide express delivery. Express messages are limited to 145 characters however, we recommend keeping the message less than 145 characters and leverage the rest for legal language. (ex. TxtStop2End)