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title: "Contact"
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## Mailinglist

To contact us, please use our [orga mailinglist](mailto:{{< cosin "orga_email" >}}).

The mailing list is the best way to reach the whole CoSin team.

## Matrix Chat

During the event, the best way to reach us is probably Matrix. Please use the main room [{{< cosin "matrix_space" >}}:{{< cosin "matrix_server" >}}]({{< cosin "matrix_to" >}}{{< cosin "matrix_space" >}}:{{< cosin "matrix_server" >}}).

## Links and groups behind CoSin

* [Chaos Computer Club Switzerland (CCC-CH)](https://ccc-ch.ch)
* [Chaos Computer Club Basel](https://ccc-basel.ch/)
* [Chaostreff Bern](https://www.chaosbern.ch/)
* [Coredump (Hackspace Rapperswil)](https://www.coredump.ch/)
* [Hackspace Eastermundigen](https://www.eastermundigen.ch/)
* [Hackspace St. Gallen](https://www.ruum42.ch/)
* [Odenwilusenz (Hackspace Beringen, Schaffhausen)](https://www.odenwilusenz.ch/)
* [Chaos Computer Club Zürich (CCCZH)](https://www.ccczh.ch/)
* [SheGeeks](https://www.shegeeks.ch/)
* [Chaos Computer Club](https://www.ccc.de)