Odhiambo Washington via Mailman-users writes:
The superuser account uses my address - odhiambo at gmail dot com. I am also the listowner for most lists. I tried unsuccessfully to create an account on Postorious using the same email address.
I don't see how you can do this. It's the same user database, and email addresses are accepted as identifying a unique User object in the database for authentication and authorization purposes in Django.
I doubt that Django understands the Gmail "punctuation doesn't exist" concept, and I don't think Mailman does either, so you can probably use ohdiamb.o@gmail.com for the new address. (Or you could create a new superuser to use the ugly address, delete the old one, and then claim the pretty address for your ordinary user.)
-- GNU Mailman consultant (installation, migration, customization) Sirius Open Source https://www.siriusopensource.com/ Software systems consulting in Europe, North America, and Japan