When you buy SMTP server, you are essentially purchasing a dedicated server that is exclusively used for your email communication needs. This server is set up and configured by the provider to ensure that email messages are delivered reliably and securely.

Buying an SMTP server can be beneficial for businesses or individuals who need to send a large volume of email messages regularly, such as transactional emails, newsletters, or promotional emails. With a dedicated SMTP server, businesses can enjoy a higher degree of control over their email communication, which can be crucial for ensuring deliverability and preventing emails from being marked as spam.

Moreover, buy an SMTP server allows businesses to customize their email communication strategy and ensure that their emails are not being sent from shared IPs or domains, which can be flagged by email providers as potential spam sources.

It's important to note that buying an SMTP server also comes with certain responsibilities, such as ensuring that your email communication practices comply with anti-spam laws and taking measures to secure your server against potential security threats.