We get that the reasoning behind keeping an email address on an Unsubscribed list, when someone has asked for it to be changed or removed, might sound a bit mad, but it’s what the ICO strongly recommends. They say ‘As soon as someone objects to or opts out of your marketing, you should add them to a ‘do not contact’ list. You should screen all your marketing against this list to make sure you don’t contact anyone who has opted out… You must not simply delete their details altogether, as you need to ensure they are not later put back on your marketing list by mistake.’
Keeping an Unsubscribed list is a failsafe mechanism to ensure that those email addresses are never mistakenly re-added or contacted. (We did not send the Christmas Eve email to our Unsubscribed list, for example, because our email provider simply will not allow any emails to go to those addresses.)
As we said upthread, we completely agree that those who've asked for their emails to be changed shouldn't have their old email retained anywhere in the active mailing list in our email provider. That's what the mails we sent aimed to rectify. If you think that applies to you, you can respond to that email by hitting Unsubscribe (which will move you to our Unsubscribe list). However, if you're absolutely sure you want to be manually removed from our Unsubscribed list too, email us on [email protected] and we'll action it for you.
All that said, we are looking at auto-deleting these 'old' emails from the Unsubscribe list at a certain point in time - our email provider suggests 18 months after they are added.
Two things to note, finally:
None of these 'old' emails can in any way be linked to any Mumsnet user account - there is absolutely nothing in our email provider database giving any information about which Mumsnet user account they were previously associated with.
And secondly, we will always hold an email address for anyone who has a Mumsnet user account. This is held in our user database (which is separate from our email provider) and is a part of your log-in information. There's no way to have a Mumsnet user account without your email address being in our user database. That address is used for sending notifications (for example if you have asked to Watch a thread), for responding to you if you ever hit the 'report' button, and, very occasionally, to send urgent emails to every user - for example if we need to force a password reset.