Description
WP Mail SMTP Pro reconfigures WordPress’s wp_mail() function to send messages through authenticated providers like Gmail/Google Workspace, Microsoft 365, Amazon SES, SendGrid, Brevo, Mailgun, Postmark, Zoho Mail, SMTP2GO, SparkPost, and custom SMTP, eliminating the classic problem of notifications landing in spam or never reaching the recipient at all. Ideal for WooCommerce stores, sites with contact forms, membership platforms, and any project whose operation depends on reliable transactional emails.
Key Features
- Multiple authenticated mailers: connects WordPress to SendLayer, SMTP.com, Brevo, Amazon SES, Microsoft 365/Outlook, Zoho Mail, Google Workspace, Mailgun, Postmark, SendGrid, SMTP2GO, SparkPost, Elastic Email, MailerSend, or generic SMTP via API or credentials.
- Complete email logging: records every message sent in the WordPress dashboard with delivery status, content, attachments, source, and technical headers, with a button to resend messages directly from the log.
- Conditional Smart Routing: applies conditional logic to route different types of email through distinct providers, separating, for example, WooCommerce notifications into one account and form replies into another.
- Backup connection with failover: configures a secondary provider that automatically takes over sending when the primary mailer fails, preventing the loss of critical messages like order confirmations.
- Failure alerts and reports: triggers warnings by email, Slack, SMS via Twilio, Microsoft Teams, Discord, or webhook when a send fails, and generates weekly reports with open rates, clicks, and per-message performance.
Benefits of WP Mail SMTP Pro
- Real improvement in deliverability: authentication via API or authenticated SMTP places emails in the inbox instead of the spam folder, recovering notifications that were previously lost.
- Total visibility into sending: the centralized log shows exactly which messages went out, which failed, and why, making diagnosis easier in environments with Gravity Forms, Contact Form 7, WPForms, or WooCommerce.
- Operational resilience: the combination of smart routing and a backup connection keeps the email flow active even during occasional outages or temporary blocks from the primary provider.
- Control over native notifications: lets you choose which default WordPress alerts should actually be sent, reducing noise in the admin inbox and unnecessary traffic through the mailers.
Who Is It For?
- Administrators of WooCommerce and Easy Digital Downloads stores who need to guarantee delivery of order confirmations, receipts, and status updates.
- Sites with a high volume of forms (Gravity Forms, WPForms, Contact Form 7) and membership or LMS platforms dependent on registration and password recovery emails.
- Agencies and developers who manage multiple WordPress sites and want a single standard for authenticated sending, logging, and failure monitoring across their entire portfolio of projects.
More than just an SMTP connector, WP Mail SMTP Pro consolidates authenticated sending, message logging, conditional routing, and performance reports into a single flow within the WordPress dashboard. For those who treat transactional email as a business-critical piece — sales, support, onboarding — the practical result is fewer customer complaints about “not receiving the email” and more predictability in the site’s automated communication.
Frequently asked questions
Is WP Mail SMTP Pro GPL-licensed?
Yes. WP Mail SMTP Pro is distributed under the GPL (GNU General Public License). You may legally use, modify and redistribute it on as many sites as you want.
Can I use WP Mail SMTP Pro on multiple sites?
Yes. You can use WP Mail SMTP Pro on multiple sites. The number of sites connected to Ultrapack Auto Updater is limited by your plan.
How much does WP Mail SMTP Pro cost at Ultrapack?
WP Mail SMTP Pro costs US$2.99 as a single purchase, and it is also included in the subscription plans starting at US$12/mo (VIP I).
Does WP Mail SMTP Pro include updates?
Yes. The current version of WP Mail SMTP Pro is 4.9.0, published at Ultrapack on Jun 25, 2026. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).
Is WP Mail SMTP Pro scanned before publication?
Yes. Every version of WP Mail SMTP Pro goes through a malware scan (ClamAV and YARA rules, at UltraHub) before it is published.
What are the requirements for the plugin WP Mail SMTP Pro?
Requires WordPress 5.5 or higher and PHP 7.4 or higher.
What changed in this version
Version 4.9.0 2026-06-24
- WP-CLI commands to configure WP Mail SMTP from the command line, including SMTP and API-key mailer setup, individual setting management, and alert provider configuration.
- Code Snippets tab on the Tools page to browse, preview, and install WP Mail SMTP's WPCode snippets.
- Support for the WordPress Abilities API (WordPress 6.9), letting connected tools and AI assistants securely read your email logs, sending statistics, and debug events.
- Confirmation prompt before enabling the "Hide Email Delivery Errors" option, so the setting is not turned on by accident.
- Improved error handling and troubleshooting guidance when an email fails to send.
- Updated Action Scheduler library to 4.0.0.
- The WPMS_LOG_BLOCKED_EMAILS constant in wp-config.php did not affect the Log Blocked Emails setting; defining the constant now correctly enforces the value, disables the option in the admin area, and shows a notice indicating it is set by a constant.
- AWS SES mailer triggered a PHP `is_readable` warning when reading AWS config files on servers with an `open_basedir` restriction.
- Failed email alerts linked to the wrong Email Log entry when a backup mailer succeeded after the primary failed; the alert now links to the failed primary's Email Log entry instead of the backup's success entry.
- Hosts using database read replicas could show duplicate Email Log entries and missing error details.
- Alert notifications flooded scheduled actions and external channels during provider outages; automatic alerts are now limited to one notification every 5 minutes.
- The "Last week" stat in the Lite weekly summary email showed the just-started current week's count instead of the actual previous week's total, because the email is sent on Monday at 2pm.
- Connecting the Zoho mailer could trigger a fatal error when Zoho returned an unexpected account response.
- Hardened permission checks and request handling across several admin and alert features to address potential security issues.
Version 4.8.0 2026-04-16
- SendLayer Quick Connect - allows connecting to SendLayer without DNS setup in 2 minutes.
- Improved plugin security.
- Fatal TypeError on PHP 8.x when Outlook One-Click OAuth token expires.
- JavaScript error when adding the 10th or more smart routes.
Version 4.7.1 2025-11-26
- Text domain in a couple of strings.
- Switched Return-Path option to enabled by default to align with WordPress core.
Version 4.7.0 2025-11-12
- New transactional mailer: Resend integration.
- Recurring task filling up task meta table.
- Outlook one-click setup redirection after authentication.
Version 4.6.0 2025-08-28
- New transactional mailer: Mandrill integration.
- Incorrect deliverability verification webhook status for SMTP.com mailer.
- References and In-Reply-To email headers are now correctly preserved for API-based mailers.
Release notes published by the developer.
How to install
Automatic updates: this item is updated by the Ultrapack Auto Updater. With it installed, the new version shows up in your dashboard like any other WordPress update (how to set it up).
- Download the file
wp-mail-smtp-pro.zip. - In the WordPress dashboard, go to Plugins > Add New > Upload Plugin.
- Select the file
wp-mail-smtp-pro.zipand click Install Now. - Click Activate.
Requirements: Requires WordPress 5.5 or higher and PHP 7.4 or higher.
- This item is already activated. If any screen asks for a license, enter any code; any email works in the email field.
Stuck on a step? Open a ticket telling us which one you stopped at.

UAU Ready