up,mailman get...down,mailman leave
It let's the mail carrier know that you have outgoing mail that needs to be delivery somewhere else.
No, the mailman is not required to pick up outgoing mail if there is no mail to deliver. You typically need to alert the postal service or leave the outgoing mail in your mailbox for the mailman to pick it up.
No, mailbox flags do not have to be red in order to be effective. The purpose of a mailbox flag is to indicate to the postal carrier that there is outgoing mail to be picked up. The color of the flag is not a requirement for its functionality.
Yes, the noun 'mailbox' is a common noun; a general word for a receptacle for the public to place outgoing mail; a general word for a private receptacle for delivered incoming mail; a general word for a computer file for that receives incoming e-mail; a word for any mailbox of any kind.
mailbox
In the US, when the flag is up it means there is outgoing mail in the mailbox to be picked up by the letter carrier. This alerts the letter carrier to stop at the mailbox even if s/he has no incoming mail to leave for the addressee. When you get ready to mail a letter, leave it in the mailbox and raise the flag. When the letter carrier arrives s/he will take the mail you left in the mailbox, leave any mail s/he might have for you and lower the flag. The flag can also serve as an indication the letter carrier has come and left mail, but it's generally thought inconsiderate to use it for that purpose alone because if the letter carrier has no mail for you it forces him or her to make an unnecessary stop.
No you can not. The mailbox is for use of official mail that has gone through a post office only. I know of some instances that a mail carrier will not take mail from a box to be mailed if it does not have the name and address of the box owner on it. Meaning that you could not put your outgoing mail in someone elses box to be picked up.
The rules for mailbox flag usage are that you should raise the flag to signal outgoing mail for the postal carrier to pick up, and lower it once the mail has been collected. It is also customary to raise the flag when you have incoming mail to be picked up. Remember to only use the flag for its intended purpose and not as a decoration.
Outgoing mail server (SMTP): smtp.charter.net
your mailbox!
To properly put mail in a mailbox, place the mail with the address facing outward and the stamp in the top right corner. Close the mailbox securely after inserting the mail.