Is there any way to have a confirmation that correspondences were successfuly sent to candidate?

Summary

Is there any way to have a confirmation that correspondences were successfuly sent to candidate?

Content

Hello ,
For notification for the candidate -Is there any way to have a confirmation for the recruiter that the candidate received the correspondence?

For example in prod correspondence- named - 'Rejection Letter To candidates On Hold Requisition' - its a manual correspondence ,to a candidate -
how can we know that the candidate received the notification / that the notification was sent ?

see screenshot attached please

Thanks,
Revital