Task: Analyze the tweet's emotional connotations and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best portray 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