How will the email be sent in multi-level approval?

If you’ve configured multi-level approval under Purchase Approvals, the email notification will be sent to the first approver (Level 1 approver). Once it is approved, another email notification will be sent to the next approver in line (Level 2 approver). Likewise, the email notification will be sent to all the subsequent approvers who are a part of the multi-level approval process.