I’m going to venture a guess that you likely won’t find one. Technically, the newest version of Bluetooth can hit the required bandwidth, but you’d need to have both transmitter and receiver capable of receiving the most current version, which I believe is quite different from previous versions (I think Bluetooth 5 is most current).
Also, think of how easy Bluetooth can get interrupted. Ever had BT headphones on around a microwave? If you’re trying to stream 4k, any little interruption will likely cause loss of quality, like if you’re also using BT headphones near the theoretical camera. If you’re trying to use a BT camera for work or something requiring consistent quality, it may be better to get creative with your cable management.
Can you access your email through since other means? Tablet, computer, or old phone?