An SMTP server is a machine that enables the sending and receiving of email. The most basic form of an SMTP server simply relays messages from one email system to another. However, more sophisticated SMTP servers provide a variety of features, such as the ability to store messages, to filter messages, and to forward messages to other email systems. Online SMTP server services provide all of these features and more, often in a pay-as-you-go model that can be more cost-effective for small businesses than maintaining their own SMTP server.
An online SMTP server is a server that helps you send emails. It can be used to send and receive emails, as well as to manage your email account.
The bottom line is that an online SMTP server service can save you time and money. By using an online SMTP server, you can send emails from anywhere in the world without having to worry about setting up a local server. In addition, online SMTP server services are usually much cheaper than traditional SMTP server services.