Support Threema (via Threema Gateway)

[rugk]

Threeema Gateway is a secure messaging API for users of the Threema app, which is available for many platforms.
It is especially widespread in German-speaking countries.

Messages are end-to-end encrypted and users get it directly on the user’s phone. In contrast to SMS it is way cheaper, you can send longer messages and customize your Gateway channel (own logo, own ID).
Open-source SDKs are available.

Pain point to solve

Privacy and security. Threema is particularly interesting, because it’s an independent European messaging provider especially popular in the German-speaking, so-called DACH region (Germany, Swiss, Austria).

Implementation

This has previously been discussed/raised in Threema Gateway · Issue #221 · zammad/zammad · GitHub. Here some implementation libraries:

• in Rust: GitHub - threema-ch/threema-msgapi-sdk-rust: Rust SDK for Threema Gateway. · GitHub
• there was a working proof of concept PoC
• This was based on this Ruby library: GitHub - threemarb/threema: This gem provides access to the Threema Gateway API. · GitHub

[YetAnotherGerrit]

Thank you for raising this as a feature request after I closed the issue. There hasn’t been much interest in this in recent years. The community might provide more useful insights, as it is easier to collect “Likes” here.