I have two email addresses, A and B, which are linked to the same user account in Mailman 3. They were both used for list administration so they presumably both got subscribed to the listadmins list; I get the emails to both addresses.
Trying to change that worked weird:
- went to https://lists.wikimedia.org/postorius/lists/listadmins.lists.wikimedia.org/
- clicked on "Manage Subscription"
- used the "Change email used for subscription" option
- https://lists.wikimedia.org/postorius/lists/listadmins.lists.wikimedia.org/ now doesn't seem to recognize me as a member (it has a "Subscribe to the list field"). https://lists.wikimedia.org/postorius/accounts/list-options/listadmins.lists.wikimedia.org/ still loads but if I try to use it I get an empty page with An error occurred while processing your request.. In https://lists.wikimedia.org/postorius/accounts/subscriptions/ the list shows up twice, once with each email address. (That might have been the same way before I dismembered myself, I did not check.)