We were sending most of our SMS alerts with the updown.io sender ID, this usually looks nice (unless your carrier doesn't support it and replace with another number) but it unfortunately doesn't play well with "Do not disturb" mode as you can't exclude updown.io from it (it needs to be a real number). So we've changed this to long numbers so you can add it to your contacts if you want to give it a name and you can now exclude it from "Do not disturb". Also we added a prefix to all SMS: [updown alert] so there will be no confusion as to who sent this now that the sender ID can be a number.
Let us know if you experience any new issue since this change.
The sender ID may change depending on your country:
|Country code||Sender ID|
|AT, PL, RS||updown.io|
|CA, IL, PR, US||+18445900909|
|All other countries||+33644633396|
Note that some operators in some countries will require to change the Sender ID to ensure delivery so you may receive SMS from another sender.