dickinson explains that "love is life" which can be interpreted as love is what makes things grow, like a seed to a flower, but it can also be seen as it is also the beginning to the end, like a baby in a crib to a man in a grave. However, dickinson then states that "life hath immortality" so if love is life, and life is unable to die, then love too wont die.
This poem is saying that love is life, and life is nothing without love. She is saying that she has always loved the receiver and that without love, there is nothing. With love, however, life is immortal. And if the receiver doesn't believe that she loves him, she will do nothing but suffer.
