Task: Assess the emotional content of the tweet and classify it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's mental state.
Tweet: Not sorry for that burst of anti #Allo spam, fuck any messaging app launching in 2016, without encryption on by default.
This tweet contains emotions: 
anger, disgust