I recently purchased a bulk email list. I think its a scraped list not opt-in one. The list seems to be old and may contain many bad emails and spam traps. How can I clean those emails to remove spam traps and bad emails? I come across Sendblaster but I don think it will clean the list for spam traps and also it does not have proxy support. Any software available with proxy support which can be used for cleaning the list as well as for mass mailing?