Sample Mail send using telnet

telnet mailtrap.io 2525
Trying 54.85.222.127...
Connected to mailtrap.io.
Escape character is '^]'.
220 mailtrap.io ESMTP ready
EHLO mailtrap.io
250-mailtrap.io
250-SIZE 5242880
250-PIPELINING
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-AUTH PLAIN LOGIN CRAM-MD5
250 STARTTLS
AUTH LOGIN
334 VXNlcm5hbWU6
NDU5MzRiMmE4MGE3ZTE1YWY=
334 UGFzc3dvcmQ6
MDFiNzFiZmZmYTIzN2Y=
235 2.0.0 OK
MAIL FROM: <from@mailtrap.io>
250 2.1.0 Ok
RCPT TO: <to@mailtrap.io>
250 2.1.0 Ok
DATA
354 Go ahead
To: to@mailtrap.io
From: from@mailtrap.io
Subject: Hello world!

This is the test message...
.
250 2.0.0 Ok: queued
quit
221 2.0.0 Bye
Connection closed by foreign host.