Threema rejects WhatsApp integration: data protection and business model cited (heise.de)

• Threema refuses WhatsApp interoperability citing data protection and business model.
• EU Digital Markets Act (DMA) mandates WhatsApp to open up to third-party messengers.
• Only BirdyChat and Haiket have adopted the interface so far.

"Swiss messaging service Threema will not connect with WhatsApp. In a blog post, the company cites data protection concerns, technical hurdles, and fear for its business model. The EU's Digital Markets Act (DMA) mandates interoperability for designated gatekeepers like WhatsApp."