It’s been over 3 years, I wonder why such an essential feature wasn’t integrated. I think because they’re using matrix-bot-sdk as an infrastructure for the implementation, which does work well, but does not support E2EE.
For E2EE, using matrix-js-sdk can be a better alternative, but this also means they need to rebuild their integration.
One of the main reasons for using Matrix is E2EE, which became mandatory for some businesses. It’s sad not to use N8N for Matrix integration just because it lacks this feature. Please, please!