The difference between direct and indirect supervisor is the presence of the supervisor. Direct supervision means a supervisor is psychically present.
When mailing a certified letter, a person should expect it to take from three to five days to reach its destination. Depending on how long it takes the recipient to pick up the letter, the process can take up to 21 days. People who send certified mail receive a notification to prove that the letter has been received by its recipient.
Certified Mail is a special USPS service that provides the person sending the mailpiece. with an official receipt showing proof the item was mailed. When the mailpiece is. delivered, the mail carrier requires a signature from the recipient. That signature is. stored in the USPS database for a period of 2 years.