Retry protocols seldom exceed 30 days, most are shorter (four days is not atypical), so it should be possible to sort out any issues over non-delivery within (say) two months.
If the list is closed and there is no other use for the addresses, I'd say retention for two to three months after closure could be easily justified.
> On 7 Mar 2017, at 16:37, Naya Jones <[log in to unmask]> wrote:
>
> Hi all,
>
> When closing down an email newsletter service, how long should the customer email addresses be retained for? The email address and name are stored in Mailchimp.
>
> Can this just be deleted?
>
> Thanks
> Naya
>
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