Alerts for schools
The common thread is not size. It is that the message matters more than the medium, and that the people who need it already know who you are.
One handle, printed once, permanent
A channel lives at drop.top followed by its handle, and that address never changes. It cannot be edited after creation, because it ends up on a poster in a school entrance, on a festival gate and inside a QR code somebody has already laminated. The page behind it explains what the channel is, what it asks a phone for, and how to subscribe — so a stranger reading a poster can decide before installing anything. We generate the QR code for you, server-side, and it is never sent to a third-party image service.
Three rungs, and each one costs something
Normal is a notification in the shade and needs no permission at all. Important is a heads-up banner with a sound, if the subscriber allowed this channel that. Urgent may take over the screen, override Do Not Disturb and be read aloud — each granted separately, each refusable. The rung is a ceiling rather than an outcome, and it is also a budget: a channel that spends Urgent on a car-park closure loses the permission the same afternoon, from the only people who could have granted it.
Nothing that could identify anybody
Subscribing needs no account, no email address and no phone number. What a subscription actually holds is a random identifier the app generated, a platform, an app version, a language and a time zone — coarse enough that hundreds of millions of people share one. There is no name, no contact detail, no advertising identifier and no location, and there is no export that would let an operator build one. You cannot leak a list you never collected.
Questions, answered plainly
Can I change my handle later?
No, and that is on purpose. It gets printed on posters and encoded into QR codes, and a handle that could change is a handle that turns somebody’s laminated sign into a dead link. Choose it the way you would choose a street name.
When should I use urgent priority?
When somebody needs to act in the next few minutes: an evacuation, a lockdown, a genuine safety instruction. Not for a schedule change, and not for anything that would still be fine to read an hour later. Urgent is granted by subscribers one at a time and withdrawn just as easily, so it behaves like a budget rather than a setting.
What do you collect about somebody who subscribes?
A random identifier the app generated, a push token, the platform, the app version, the language and the time zone. No name, no email address, no phone number, no location, and no advertising identifier. Subscribing needs no account at all.
Do subscribers need an account?
No. They install the app, subscribe to a handle, and that is the whole of it. Only the person running the channel signs up for anything.
Say it once. Every subscribed phone gets it.
Free up to 100 subscribers, no card to start, and the handle is yours permanently.
Start a channel