[brnt]

It does, and the benefit is that anyone with an email address can already be approached via Deltachat, because all it does is send and receive email through the Autocrypt protocol, which gracefully degrades with clients that don't support it.

[akerl_]

Gracefully degrading for clients that don’t support it is an un-goal of encrypted messaging.

[ekianjo]

You cannot read encrypted messages if you do not have gpg support. Not sure what your comment is about.