So far I like it, it's one of those tech advances where it's different enough and uses strange techy words that it's kinda confusing, but here is my smooth brain understanding:

Basically you can think of it as basic email service with good amount of storage space and custom domains on the roadmap. Really the two things most people, like me, care and want.

It's different because it uses blockchain (sia) to store your emails encrypted on the chain and delivers it direct to your devices, only your devices with your password can unencrypt your messages. So there's no traditional middle-man that can mine your data to do things like give you relevant ads. It's seamless with traditional mail so normal mail that gets sent to you gets encrypted once it hits Telio's server, otherwise it's complete end-to-end encrypted if you receive email from another Telios address.

It's a good deal to me because I like the roadmap and i feel potential, but I understand why people might knock the current version because - it's currently only on desktop, there's no mobile apps. Custom domains is not in yet, you can't change your password yet. If you compare the current version to other mail services, it lacks in features.

But these are the costs of progress if you are an early adopter and a better future is worth the price you pay today.