send(Swift_Mime_Message $message, $failedRecipients = null) {@inheritdoc}
string setKey(string $key) Set the API key being used by the transport
string getKey() Get the API key being used by the transport.
stop() {@inheritdoc}
isStarted() {@inheritdoc}
start() {@inheritdoc}
string getDomain() Get the domain being used by the transport.
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