SMTP Port Configuration:<br/>Common ports: 25, 80, 465, or 587.<br/>&#9679; If the email is sent from your own server, use port 25 or 80.<br/>&#9679; For Gmail or Microsoft services, use port 465 (for SSL) or 587 (for TLS).<br/>Ensure the selected port aligns with the security protocol and is supported by your email service provider.