送信

送信	sòng xìn	to send word / to deliver a letter
送	sòng	to send; to deliver; to transmit / to give (as a present) / to see (sb) off / to accompany; to go along with
信	xìn	letter / mail / CL:封 / to trust / to believe / to profess faith in / truthful / confidence / trust / at will / at random