I don't think direct SMS will ever be added for NZ.
I haven't used any of the NZ Telco SMS gateways for a while, but I think the main ones are:
Vodafone: https://www.vodafone.co.nz/multitxt/
Spark: https://www.sparkdigital.co.nz/solutions/mobility/eTXT/
I think Lateral profiles (in NZ) might still offer a third-party email to TXT gateway still.
https://www.lateralcorp.com/
All of these are commercial offerings.
Other options for you to consider:
- If you use MS Teams, you can have alerts posted directly to an MS Team on your phone. There is also support for Slack and WebEx.
- If you have a small help desk you can also use commercial services like PagerDuty, which can push alerts directly to your team members. I believe when a team member acknowledges an alert it does so for everyone.
https://www.pagerduty.com/