Threema Gateway got more versatile. You can now send and receive images and files of any type up to 20 MB. This gives organizations and enterprises alike a plethora of new use cases to communicate with their customers, employees or other stakeholders and receive data from mobile users or field personnel - instantly and in a safe and secure way.
These new message types are exclusively supported in end-to-end mode. You find the new SDK (version 1.1.0) and modified documentation of the API here or on GitHub.
