The term 'mail away' can be broken down into four crossword solutions: SHIP (4 letters), sendoff (7 letters), SEND (4 letters), and sendin (6 letters). Mail away is a phrase that is used to describe the act of sending something away, usually through the mail. SHIP is the most common way to mail away an item, as it involves sending it via a shipping company. Sendoff is another way to mail away an item, but it usually involves a more ceremonial or celebratory event. SEND is the most basic way to mail away an item, as it simply means to SEND it away. Finally, sendin is a slightly more formal way to mail away an item, as it implies that the item is being sent in for some purpose.