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by x0ner 3157 days ago
I'd assume so. More potential fake "subscribers" mean more bounced email and higher volumes which could be used as a early warning indicator for spam or reputation flagging. Slightly related, but I've noticed countless delivery issues with Mandrill, Mailchimp's transactional service. Their portal claims messages have been delivered, but many organizations relay back to us that their message never made it past the mail gateways.