For Product support or general feedback contact our support team here.

Business Inquiries

Feel free to contact our business team at the following eMail address: sales -at- threema -dot- ch

Press Inquiries

Our media relations team is at your service. Feel free to contact us at press -at- threema -dot- ch

Logos, screenshots and other press material is available for download here.


If you discover a security issue in the Threema App, please follow responsible disclosure and report it directly to security2019 -at- threema -dot- ch

Our PGP public key fingerprint:

pub		rsa4096 2017-02-08 [SC] [expires: 2022-02-07]
		677E 0E97 1669 53B3 2620  D95C 71B9 C6BA C55A 9855
Download PGP Public Key

You can also find us on Keybase.


Threema GmbH
Churerstrasse 82
8808 Pfäffikon SZ
Company ID: CHE-221.440.104