What about when I use a mail client?

So the mail client is protected without knowing details of any weaknesses in its implementation.

And getting the screenshots off the device was a challenge in itself (especially since the mail client wasn't working).

The mail client then provides the sender's identity to the server.

It starts up faster, too, which is pretty nice (difference especially visible when using the built-in mail client).

Or do I have to connect a mail client, and do it that way?

Some mail clients use a negotiation process in which it's asked whether a secure connection can be made.

However, that is not to say I personally am satisfied with the mail client.

There aren't a whole lot of other obvious ways to monetize a mail client.

None of these are major, but they all take the shine off an otherwise solid mail client.