String version of headers from the SMIME message.
def get_output_message_headers_string() -> str: ...
output_message_headers_string = property(get_output_message_headers_string, None)
This property contains the string version of headers from the SMIME message. The class will populate this property after signing and/or encrypting.
The user should use these additional headers when emailing or sending the output_message. This can be done by including these headers in the OtherHeaders property of the class that you wish to send the message with.
After the decryption or verification, this property contains the headers of the verified or decrypted message.
This property is read-only.