About Expansel

Expansel started from an ordinary observation: you almost always find out too late that a site went down or a link disappeared. Not for lack of tools, but because the existing ones demand daily attention nobody has.

The idea fits in one sentence: you declare what matters, we check it at regular intervals, and we only write to you when something changes. The rest of the time, the tool stays out of your way.

How it works

Expansel requests your pages from the outside, like a visitor. Nothing to install on your server, no access to hand over. Every check is recorded, that is what makes it possible to show an availability rate, a response-time curve, and to produce a report you can pass on to a client.

What we hold to

• Alert on state changes, never continuously. A tool that sends too many emails ends up in an ignored folder, and is useless on the day it really matters.
• Publish what we measure, not what we extrapolate. We report a rate of successful checks, not a downtime duration inferred from samples.
• Never delete anything silently. Turning monitoring off on a target keeps its settings and its history; only an explicit deletion erases something.

Who publishes the service

Expansel is published from France. The details of the publisher, the hosting and the handling of data are set out in the legal notice, and we answer directly by email.