Your Summary AI email is tied to your Google or Apple account. To switch it, you'll sign in with a different Google or Apple account — that account's email becomes your new login.
Requirements
An active Summary AI account linked to Google or Apple Sign-In
A Google or Apple account with the email you want to switch to
Using a guest account? You'll need to link it first before changing your email. Go to Settings → Account → Link account.
Steps
Open the app and go to Settings
Tap Account
Tap Change Email
Choose Google or Apple
Sign in with the account that has your new email
A confirmation prompt will show your new email — tap Confirm to apply
Your summaries and account data stay intact — only the login email changes.