How big can you email with GMX?

As a cryptocurrency and finance professional, I'm often faced with the challenge of securely transmitting large files. Given the recent rise in popularity of GMX as a platform, I'm curious about its email capabilities. So, how big can you actually email with GMX? I've heard rumors about its high storage limits, but I'd like to know the specifics. Is there a set maximum file size, or does it depend on other factors? Additionally, does GMX offer any encryption or security measures to ensure the safe transmission of sensitive information? Answers to these questions could help me determine if GMX is a viable option for my needs.