Task: Analyze the tweet's emotional expression, classifying it as 'neutral or no emotion' or as one or more of the identified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's emotional state.
Tweet: 'Best customer, ... We are pleased to inform you that the order has been sent today.' #butterflies #excitement #technojoy #music ~ OP-1 &lt;3
This tweet contains emotions: 