For example, water is composed of two hydrogen atoms bonded to one oxygen atom: the chemical formula is H2O. A compound can be converted to a different chemical composition by interaction with a second chemical compound via a chemical reaction.
To send mail using an Outlook.com account from an email program, see the Outlook.com SMTP server settings. 1  Outlook.com SMTP server name smtp-mail.outlook.com. 2  Outlook.com SMTP port 587. 3  Outlook.com SMTP encryption method TLS.
SMTP is the protocol used to <send> new mail regardless of what protocol is used to <retrieve> new email which is why POP3 and Imap accounts are shown as POP3/SMTP and Imap/SMTP account types in the Outlook account settings. All external internet email is sent using the SMTP protocol from an SMTP server.