Where did that form submission come from?
When you receive an email from a webform submission it's not always entirely clear where that submission came from. If you manage many sites you might have multiple contact forms that all send to your address but don't include which form the email came from.
You can fix this by adding the source url token to the email body. These will need to be added to each handler. Make sure the message body is set to custom, and you can add the tokens below:

- Link to form where the submission came from: [webform_submission:source-url]
- Link to submission: [webform_submission:url:?] - this token is helpful if you need access to files that may have been attached to the form submission.