If you already have an email address, such as a personal email address, with a Linux Foundation SSO, yet you want to use a corporate email address for a groups.io, you can do so.
The login workflow supports given you this option if you wish to either add a different email address or use an existing SSO.
The easiest way to review identity and email associations with your SSO is to go to https://myprofile.linuxfoundation.org
From there, you can directly add identity providers, such as LinkedIn, Google, or GitHub, as well as email addresses.