Read the following passage and answer if the question is true or false.
Passage: The return address is not required on postal mail. However, lack of a return address prevents the postal service from being able to return the item if it proves undeliverable; such as from damage, postage due, or invalid destination. Such mail may otherwise become dead letter mail.

Question: is it possible to send a letter without return address?

Is the answer True or False? Respond with only "True" or "False" and no additional text.
True
True.