Gmail lets you use Simple Mail Transfer Protocol (SMTP) to access third-party email clients (such as Outlook and Thunderbird) or send emails from your WordPress site. If you have an enterprise account ...

The protocol that has defined e-mail for more than two decades may have a fatal flaw: It trusts you. Developed when the Internet was used almost exclusively by academics, the Simple Mail Transfer ...

AOL provides SMTP servers for the iPad's Mail app and other email programs. Simple mail transfer protocol servers function differently than POP servers; every action you take with your AOL email on ...

BizMail, Yahoo's small-business email solution tied to Yahoo Web hosting, gives you up to 10 email addresses specific to your domain name. BizMail has Post Office Protocol, or POP, and Simple Mail ...

The rules, formats and functions for exchanging messages between the components of a messaging system. The most widely used messaging protocol is the Internet's Simple Mail Transfer Protocol (SMTP).