If you chose to keep your email private and remove it using Facebook or Sign in with Apple, the accounts and logins will appear without an email address. 

Visit here for more information on how to manage apps linked to your Facebook account, and what information is shared.

Visit here for more information on how to manage apps linked to your Sign in with Apple account, and what information is shared.

If you do not wish for your email to be hidden, you can manage privacy settings directly with your provider. 

• Context: Facebook, Sign in with Apple - The user may not have shared an email with us. These accounts will appear without an email and show “No email provided”.

• Next steps: We can recommend to the user to add an email with their provider directly or update with a different account that has an email associated with it.

Connecting your email address allows Niantic to help you with any issues that arise with your account and send important notices about account updates and changes.