@supermathie, I am unable to do that in a way that’s of much use, because Discourse ID currently blocks my primary e-mail domain, as aforecited. Consequently, I am forced to utilise a fallback, which I would rather not directly receive mail via, even with a sub-address attached.
This debacle renders Discourse ID rather annoying to utilise, because, to avoid that, I must, first, manually create the account, then connect Discourse ID, thereby conferring none of the auto-fill advantages that it would otherwise provide.
Though, even that is somewhat futile for any real account, because enabling 2FA disables all SSO, too! Currently, for me, Discourse ID’s sole use is as a single source of truth, for accounts that I connected to it before enabling 2FA on them.
(Even utilising another SSO provider is an annoyance, because I attempt to strictly utilise one e-mail alias per account. Consequently, I would want to replace the chosen e-mail address even if I were able to utilise my chosen provider. I always end-up just connecting these after manually creating the account, before I enable 2FA.)