SMTP or Simple Mail Transfer Protocol is a TCP/IP used to send and get email. Most of email systems use SMTP to send messages starting with one server then onto the next. Messages would then be able to be recovered utilizing an email customer utilizing an email download convention, for example, IMAP or POP3.
SMTP likewise delivers email from a mail client to a mail server, along these lines the need to determine both an incoming and outgoing mail server when setting your email client.
SMTP uses ports 25 or 587 as some ISPs will block port 25.
