We currently do not have a function where you can add attachments to emails. However, we have added a function where candidates can send attachments with their messages to you which can be saved in documents under the candidate profile.
You can check these documents by:
Choose the candidate profile you want to check and click the 'Document' link on the right-hand side of the page.
Also, if you will be sending a job offer, you can include an attachment to a job offer email - this will be under the 'Offers' tab and you can check this out for the Best practices for sending candidate job offers