Your login email (from Google for example) signs you in, but it isn't always the address you want clients to see. The public email is the contact address shown on reports and in client emails. Manage both under Settings → Account → Emails.

Your Login Email is your Google (or other provider) sign-in address. It's shown for reference and can't be changed.
To use a different address publicly, add it first:
inspections@yourcompany.com) and click Add.You can remove any alternate email with the trash button.
Once you have at least one verified alternate, a Public Email selector appears. Pick the address you want clients to see — it's used on reports and in the emails clients receive when you publish. If you don't set one, your login email is used by default.