I made a SMS Gateway Addon for Home Assistant. It could interest some of you.
I haven’t done any doc so far but code and configuration is quite readable in the repository. I will write a documentation as I will get more time
In the mean time I can help by answering to all in this community
It runs on the latest version of core, supervisor, samba, mqtt and is able to send and receive SMS according to all GSM7 characters (not extended sms so far). It works with my Huawei dongle which is a modem and not a network gateway so not in HILINK mode so far (but under construction)
Using Samba, push it to addons directory and it will appear in your Local Addons Store on HA
I suggest a little more detail in the readme would be awesome.
What it does, what it needs, how it works, why I want it kind of thing. The better prepared you are with the documentation, the fewer stupid questions you will get from users.