Post SMTP
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Post SMTP ensures your WordPress emails get delivered reliably by routing through dedicated SMTP services instead of your server's mail function. The plugin includes detailed email logging so you can see which messages were sent and why any failed, plus support for 15+ email service providers like SendGrid, Gmail, Amazon SES, and Mailgun. If your primary mailer fails, it automatically tries backup providers.
It's essential if you send transactional emails from WordPress (password resets, order confirmations, notifications) and want confidence they'll actually arrive. Post SMTP stays focused on delivery infrastructure rather than campaign building, making it a lightweight complement to any email marketing plugin or service you're already using.