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.
If you have a general question, 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
For feature requests and general inputs, please use the feedback form.
Journalists and press representatives can send inquiries to
press at threema dot ch. Please find screenshots and other press material on the press page.
If you discover a security issue in Threema, please adhere to the coordinated vulnerability disclosure model.
To be eligible for a bug bounty, please file a report on GObugfree (where all the details, including the bounty levels, are listed).
If you’re not interested in the bug bounty program, you can contact us via the Threema ID:
(public key: e3c8dbddead23f1665eb546bda5bdf9203a0c47571ae8bab93fbe5c191b3ed55)
security2023 at threema dot ch.
Our PGP public key fingerprint:
pub rsa4096 2017-02-08 [SC] [expires: 2023-12-31] 677E 0E97 1669 53B3 2620 D95C 71B9 C6BA C55A 9855
8808 Pfäffikon SZ
Company ID: CHE-221.440.104