Threema Safe can be used with any WebDAV server (such as NextCloud), provided that the server can be reached via the Internet and is equipped with a valid TLS certificate trusted by the operating
system (not self-signed).
To support iOS clients, the server needs to be compliant with the
ATS requirements.
Configure the Server
- Create a directory for Threema Safe on your WebDAV server, e.g., /path/to/threema_safe
- In /path/to/threema_safe, create a text file, name it “config” (without filename extension), and add this content:
{
"maxBackupBytes": 524288,
"retentionDays": 180
}
In /path/to/threema_safe, create a writable directory called “backups”
Please note that we cannot provide support for server setup and configuration.
Configure the App
- Android
- In Threema for Android’s main view, tap the three dots in the top right corner, and select “Backups”
- Activate “Threema Safe,” and tap on “Expert Settings”
-
Deactivate “Use default server,” and enter the URL to your Threema Safe directory (as defined above), e.g., https://myserver.org/path/to/threema_safe. If your server requires HTTP authentication, please specify your username and
password
- iOS
- In the “Profile” tab, select “Threema Safe”
- Activate Threema Safe
-
Deactivate “Use default server,” and enter the URL to your Threema Safe directory (as defined above), e.g., https://myserver.org/path/to/threema_safe. If your server requires HTTP authentication, please specify your username and
password
