noun
Refers to the person to whom a letter, package, email, or other communication is addressed. Often used in formal or postal contexts.
この手紙の受信人は田中さんです。
The addressee of this letter is Mr. Tanaka.
受信人不明で郵便が戻ってきた。
The mail was returned because the addressee was unknown.
受取人 is a more general term for 'recipient' of goods or money, while 受信人 is specifically for communications.
Compound of 受信 (jushin, 'reception of a communication') + 人 (nin, 'person').