smtp-example.exp

#!/usr/bin/expect
set timeout 20

#<gen>telnet_smtp_exp
spawn telnet $env(HOST) $env(PORT)
expect "220*"

send "HELO test.mailslurp.com\r"
expect "250*"

# AUTH_STRING="\0$USERNAME\0$PASSWORD"
# USERNAME_PASSWORD_BASE64=$(echo -ne "$AUTH_STRING" | base64)
send "AUTH PLAIN $env(USERNAME_PASSWORD_BASE64)\r"
expect "235*"

# Send MAIL FROM command
send "MAIL FROM: <$env(ADDRESS)>\r"
expect "250*"

# Send RCPT TO command
send "RCPT TO: <$env(ADDRESS)>\r"
expect "250*"

# Start data transfer
send "DATA\r"
expect "354*"

# Send email headers and body
send "From: <$env(ADDRESS)>\r"
send "To: <$env(ADDRESS)>\r"
send "Subject: test\r"
send "\r"
send "this is a test message.\r"
send ".\r"
expect "250*"

# Quit session
send "QUIT\r"
expect "221*"
#</gen>