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Threema is a Swiss encrypted-messaging provider. Its portfolio includes a consumer messenger, managed organizational service through Threema Work, and a self-hosted option through Threema OnPrem.

The products share a brand but create different administrative, identity, deployment, and metadata boundaries. An organization should verify the exact edition, directory and mobile-device integrations, backup and recovery model, and who operates each server component.

Privacy competitors and inspirations uses Threema as evidence that organizations will pay for managed or customer-hosted encrypted collaboration.