Provided that changes were made to the data to be backed up and an Internet connection is established, Threema Safe creates a backup approximately every 24 hours. Each backup replaces the previous one.
You can manually trigger the backup process:
If the Threema app on your device doesn’t connect to the Threema server for 180 days, your backup will be deleted automatically from the server. To manually delete your Threema Safe backup, simply disable Threema Safe in “Backups” or “Profile.”