You can define whether or not signers get emails, and if so, whether they should receive an attachment. Most email notification situations are covered in Legalesign.
Go to Admin > Signer Experience. > Email Options > "Email signer when document is signed" and "Email sender when document is signed or rejected", and tick the relevant boxes to turn the email notifications on or off, and the additional column of boxes to the right Attach PDF to specify whether to attach the relevant PDF documents.
Check out this demo on how to change these attachment notification settings:
By using multiple signer experiences you can customise this for each of your signers, or for different documents.
If you need an option for notifications that is not available, alert support.