Host your own SMTP server means setting up and managing an email-sending server that handles outgoing mail for your domain without relying on third-party email services. In practice, this involves deploying a mail transfer agent (MTA) like Postfix or Exim on a server, configuring DNS records (MX, SPF, DKIM, DMARC), securing the server with authentication and encryption, and maintaining its reputation so emails reliably reach inboxes. While it requires technical effort, hosting your own SMTP server gives you full control over email delivery, privacy, and scalability.

Host your own SMTP server means setting up and managing an email-sending server that handles outgoing mail for your domain without relying on third-party email services. In practice, this involves deploying a mail transfer agent (MTA) like Postfix or Exim on a server, configuring DNS records (MX, SPF, DKIM, DMARC), securing the server with authentication and encryption, and maintaining its reputation so emails reliably reach inboxes. While it requires technical effort, hosting your own SMTP server gives you full control over email delivery, privacy, and scalability.