SendGrail SMTP – Secure Email Delivery, Routing & Email Log for Gmail, Outlook, Office 365 & Custom SMTP

WordPress emails landing in the spam folder, or worse, not delivering at all.

That’s the common scenario among WordPress site owners.

By default, WordPress uses the standard PHP mail function to send emails, which is notoriously unreliable and frequently blocked by major email clients.

SendGrail SMTP solves this problem permanently and without charging you a penny. YES! SendGrail is 100% free with no paid option at all.

SendGrail completely reconfigures how your WordPress site sends out emails. By routing your outgoing messages through dedicated, trusted SMTP (Simple Mail Transfer Protocol) providers, we ensure that your password resets, WooCommerce receipts, and contact form submissions reach your users’ inboxes every single time.

Designed for both beginners and advanced users, SendGrail combines a streamlined, one-click setup with powerful enterprise-grade tools like automatic failover routing and real-time delivery logs.

Why You Should Choose SendGrail SMTP

Never Worry About Compatibility (18+ Integrations)

Unlike other plugins that limit your choices or force you into premium tiers to unlock standard providers, SendGrail connects natively with over 18 different SMTP mailers out of the box. Ensure your emails reach the inbox using the exact service your business already relies on and trusts.

Navigate with Ease (Clean, Modern Interface)

Say goodbye to clunky, outdated settings pages. SendGrail features a beautifully designed, intuitive dashboard that makes configuring complex routing rules, setting up fallback providers, and viewing detailed email logs an absolute breeze—even if you are a total beginner.

Keep Your Budget Intact (100% Free Forever)

Enjoy enterprise-level email deliverability without the enterprise price tag. Every single feature—including advanced failover routing, detailed email logs, and all “premium” API integrations—is completely free. There are no restricted features, no trial periods, and absolutely no hidden paywalls.

Core Features

– Multiple SMTP Providers: Connect seamlessly with the most popular and reliable email delivery services including SendGrid, Mailgun, Amazon SES, Postmark, Google (Gmail/Workspace), Microsoft (Outlook/Office 365), and any standard custom SMTP server.
– Automatic Fallback Routing: Never lose an important email. If your primary SMTP provider experiences downtime or fails to send a message, SendGrail automatically attempts to resend using a secondary backup provider.
– Detailed Email Logging: Keep a complete record of every email sent from your website with delivery status details and timestamps.
– Secure Credentials: Define credentials directly in wp-config.php for security.
– One-Click Setup: Guided setup wizard for quick configuration.
– Advanced Debug Mode: View detailed logs to troubleshoot connection issues.
– Multisite Support: Manage settings centrally or per sub-site.

SMTP Mailers

SendGrail SMTP has a bunch of popular mailers to make sure your emails are delivered correctly.

1. Google Workspace
   Send emails securely using your professional Gmail or Google Workspace account with seamless OAuth authentication.
   Read the Google Workspace documentation

2. Microsoft Outlook
   Route your WordPress emails reliably through your personal Outlook or corporate Office 365 account.
   Read the Microsoft Outlook documentation

3. Brevo (formerly Sendinblue)
   A powerful, all-in-one marketing platform that ensures high deliverability and tracking for your transactional emails.
   Read the Brevo documentation

4. Mailgun
   A developer-friendly API service built for reliable routing, tracking, and effortlessly scaling your email delivery.
   Read the Mailgun documentation

5. SendGrid
   One of the industry’s most trusted choices for high-volume, secure transactional email delivery.
   Read the SendGrid documentation

6. Amazon SES
   A highly scalable and incredibly cost-effective cloud-based email sending service backed by Amazon Web Services.
   Read the Amazon SES documentation

7. Postmark
   Famous for lightning-fast delivery by strictly separating transactional emails from bulk promotions to protect your reputation.
   Read the Postmark documentation

8. Mailjet
   An easy-to-use email solution offering excellent deliverability for both European and global markets.
   Read the Mailjet documentation

9. SendGrid
   Connect seamlessly to SendGrid’s powerful cloud-based delivery platform to ensure your messages bypass the spam folder.
   Read the SendGrid documentation

10. Netcore
    An AI-powered email delivery and customer engagement platform built for massive scale and optimal inbox speed.
    Read the Netcore documentation

11. Elastic Email
    A robust and highly budget-friendly SMTP service tailored for marketers, developers, and high-volume senders.
    Read the Elastic Email documentation

12. SendLayer
    A reliable email delivery service designed specifically to make WordPress email authentication and delivery frictionless.
    Read the SendLayer documentation

13. SparkPost
    An enterprise-grade email sending platform optimized for top-tier inbox placement and advanced analytics.
    Read the SparkPost documentation

14. Resend
    A modern, developer-first email API built for coding, testing, and delivering emails flawlessly.
    Read the Resend documentation

15. Zoho Mail
    Connect your secure, privacy-focused business email hosting account from Zoho for trusted delivery.
    Read the Zoho Mail documentation

16. SMTP2Go
    A rock-solid, scalable SMTP provider with excellent real-time tracking and a generous free tier.
    Read the SMTP2Go documentation

17. Mandgrill
    The powerful transactional email API for Mailchimp users, offering fast, data-driven delivery for your site.
    Read the Mandgrill documentation

18. Custom (Add your own)
    Connect any standard SMTP server or private webmail host (like cPanel) to securely handle your site’s emails.
    Read the Custom SMTP documentation