Mailchimp is very diligent in trying to ensure that their clients don’t spam. With Mailchimp clients sending 68 million emails per week to Australia alone it is good for everyone (except spammers) that Mailchimp goes to such effort to reduce phishing and junk messages being sent. Part of the Mailchimp abuse-prevention initiative is trying to identify when Mailchimp customers import email addresses that have a high probability that haven’t agreed to receive EDM communication.
If you need help in identifying which of your subscriber email addresses will bounce then I can help.
I’ve written in the past about various warnings that Mailchimp provides and actions that it takes when it identifies issues with subscribers imported into lists. The message below however is new to me and was received by a person that received (very) high bounce rates when sending campaigns.