A city opens or closes
On opening, with its jurisdiction and what that implies. On closing, with the reason.
The rule
Five reasons, not a sixth.
An announcements channel is only worth something if you can rely on it without being flooded by it. Here is exactly what triggers a message from us.
The service is interrupted
At the start of the outage, and at its end. Without waiting to be asked.
A price changes
Before it takes effect, never after.
A condition changes
What we write about you, what we keep, for how long.
The month's summary
The only message sent on a fixed date, the 1st of every month: cities in service, ones that opened or closed, outages from the past month. Three lines, and nothing more when there's nothing to report. You will find no performance figures there: a published response time would be a commitment no one can keep, and the status page gives it live.
What you won't see there. No company news, no promotions, no filler content: aside from the summary on the 1st, nothing is sent on a fixed date, and we would rather have a channel that stays silent for a whole month. And nothing sensitive: as the app itself will warn you, the content of a public channel travels in plain text through the relays that carry it. We don't forget that when writing.