I could not find that much useful information on encryption and security of the RTM apps. Ideally, I'd want everything to to be E2E encrypted. How far is that from reality? is it anywhere on schedule to add this feature?

With the recent privacy concerns, I think more and more people will care about this (including myself -- and I am considering migrating from RTM if I know that this need will not be satisfied, despite being a long term user). Service providers should make it really clear that they do NOT care about any user data collection and they only "store encrypted data".

Cheers!