No, I received his last email about 12 days ago. He said that he had not forgotten me and was trying to find some other stuff.
the second sentence is reported speech:the direct speech was "I did not forget you and I am trying to find some stuff "
Do you think the tenses are well chosen? I am not sure for the first one; may be to backshift was not necessary because at the time of reporting it was still true . But the first action of not forgetting began a long time before before the trying so, it is better to maintain the time relation between these 2 actions and to choose past perfect