Threema Broadcast: Questions about Threema Broadcast that aren’t addressed in the FAQs will be gladly answered via
support-broadcast at threema dot ch.
Threema Gateway: For questions regarding Threema Gateway, please send an email to
support-gateway at threema dot ch.
Feedback and General Inquiries
To share your feature suggestions, other requests, or concerns you might have, please use the feedback form.
If you have a general question that’s not covered by the FAQs, please contact us via
info at threema dot ch.
For inquiries in relation to our business products (Threema Work, etc.), please send an email to our sales team:
sales at threema dot ch
Our media department is happy to answer press inquiries sent to
press at threema dot ch.
Please find screenshots and other press material on the press site.
If you discover a security issue in Threema, please contact us on the *SECURIT Threema ID (Key Fingerprint: ae073b054d5dfc383f483ad58387aaa5) or via
security2020 at threema dot ch, and adhere to the “responsible disclosure” policy.
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
8808 Pfäffikon SZ
Company ID: CHE-221.440.104