Alice should verify her own encrypted messages

[gregscullard]

Detailed Description
If Alice sends an encrypted message, she should be able to optionally specify if she wants to decrypt her own messages received from mirror so that any malicious activity is detected.

Actual Behavior
Alice checks signatures and hashes, but not the actual contents on the business message. This could lead to a case where her own state is out of sync with the intended recipients of her message:
-She assumes the message is correct and updates state
-Others will fail to decrypt and won't update state

Expected Behavior
Given an optional parameter, alice either assumes hash/signature is sufficient for verification or goes to the extra step of decrypting her own message.