I have mixed feelings about text messaging as too many people are slaves to their cel-phones. (I refuse to call them “smart phones”.)
My thought is that a text messages are another GTD inbox. This means I process this inbox on my terms. For me, every hour or two, I do this. If it’s an urgent matter, the sender of this communication should call me. I do not get alerts for text messages.
When somone texts me for this first time, I ask them who their cel phone provider is. Once I know this, I can send an email to their cel phone encouraging them to use this for the text messages.
https://20somethingfinance.com/how-to-send-text-messages-sms-via-email-for-free/
With email, I can process it through my native GTD platform – Outlook.
I use an ap called Airdroid, which allows me to send and receive texts from my PC Computer. From this I can cut and paste into Outlook