User guide

c Appends all of the attachments from the original message, any new message attachments, and the original
message body to the new message
d If the user indicates that the new message must be signed, sends a Message Signature Request to the device, waits
for a reply from the device, and adds the signature into the message
e If the user indicates that the new message must be encrypted, encrypts the full message
f Sends the message to the recipient's inbox
Security Technical Overview Extending messaging security to a device
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