Email Deliverability and SMTP Guide

Email sending products work best with reliable delivery infrastructure. This page explains what site owners should check before sending to a live audience.

What to recommend

• Use a reliable SMTP or transactional email provider
• Authenticate your sending domain if possible
• Send test emails before launching a full campaign
• Check spam, inbox placement, and bounce behaviour
• Monitor the Waiting to Send queue if anything stalls

Why this matters

Without proper mail delivery, WordPress may appear to send messages even though inbox performance is poor. This guide helps reduce that problem.