A branded email says it all. Now add your logo in the Preorder email.
here's how you can add logo in the email template:
Go to Shopify Admin
Click Settings > Files > copy the logo URL
Now head over to Preorder dashboard
Click Customize > Email Template > Email Settings > Paste the
logo URL in the logo box section
You can test how the logo looks by clicking the send test email option.
Hope this helps 😀