• Why SMTP is essential for WordPress email functionality
• Best free SMTP solutions: Gmail, SendGrid, Mailgun, etc.
• Step-by-step guide to setting up free SMTP on AWS, DigitalOcean, Linode, and Vultr
• Troubleshooting common SMTP issues in WordPress
• Securing your SMTP server for optimal performance

Cross-Check Links:

• Gmail SMTP Setup
• Mailgun SMTP Setup