mail

telnet #

end mail via telnet

# connect
telnet target-ip 25

# provide valid or fake email-address
EHLO username@domain.tld

# set mail-from
MAIL FROM: <username@domain>

# set recipient-to
RCPT TO: <target-username@target-domain.tld>

# set body and sent mail
DATA
354 Ok Send data ending with <CRLF>.<CRLF>
FROM: username@domain

Hallo World!
.

get mails via pop3

# connect
telnet target-ip 110

# login
USER username
PASS password

# list emails
LIST

# retrieve emails
RETR 1

curl #

download emails via curl

curl --insecure --url "imaps://target-domain/Drafts;UID=4" --user "username:password"

bypass useragent blacklisting

curl -A "Googlebot" http://target-ip/robots.txt