Custom SMTP
A Magento 2 extension to send transactional emails via external SMTP servers like Gmail, Amazon SES, and Office 365.
What is Custom SMTP?
MagePal Magento 2 SMTP Extension is a free extension that allows Magento 2 stores to send transactional emails through external SMTP servers. It solves the problem of unreliable email delivery from default hosting mail servers, which often cause emails to land in spam folders. The extension supports major providers like Gmail, Amazon SES, and Office 365, enabling store owners to ensure emails reach customers' inboxes.
Magento 2 store owners, administrators, and developers who need reliable transactional email delivery for their e-commerce operations.
Developers choose this extension because it provides an easy, admin-configurable solution to integrate with virtually any SMTP server, offers multi-store support, and includes features like credential testing and custom email headers to enhance deliverability.
Overview
Configure Magento 2 to send email using Google App, Gmail, Amazon Simple Email Service (SES), Microsoft Office365 and many other SMTP (Simple Mail Transfer Protocol) servers
Use Cases
Best For
- Ensuring Magento 2 order confirmations and notifications are delivered reliably
- Integrating Magento 2 with Gmail, Amazon SES, or Office 365 for email sending
- Reducing transactional emails going to spam in Magento 2 stores
- Configuring different SMTP providers per Magento 2 store view
- Testing SMTP credentials before saving in Magento 2 admin
- Customizing email headers like From and Reply-To in Magento 2
Not Ideal For
- Stores using managed Magento hosting with built-in email services that restrict custom SMTP configurations
- Projects requiring advanced email analytics, A/B testing, or automated campaign management beyond transactional emails
- High-volume e-commerce sites needing dedicated IP addresses and sophisticated spam score optimization not provided by basic SMTP
- Teams prioritizing minimal extension dependencies to reduce upgrade conflicts and maintenance overhead
Pros & Cons
Pros
Integrates with a wide range of providers like Gmail, Amazon SES, Office 365, and Mailgun, as listed in the README, ensuring flexibility for various email services.
Allows setup directly from the Magento admin panel without server-level changes, making it accessible for store administrators without technical expertise.
Enables configuration of different email providers per store view, which is ideal for Magento installations with multiple storefronts, as highlighted in the features.
Includes a feature to verify SMTP credentials before saving, reducing configuration errors and ensuring email functionality from the start.
Provides control over From, Reply-To, and Return-Path headers, improving email deliverability and brand consistency, as mentioned in the key features.
Cons
Due to Google's policy changes, basic username/password authentication for Gmail is deprecated post-May 2022, requiring an upgrade to the paid OAuth extension for secure access, as noted in the README.
The free version does not support OAuth authentication, pushing users to a paid upgrade for modern secure methods with providers like Gmail, limiting its out-of-the-box functionality.
Missing features like email queueing, bounce handling, or detailed send logs, which are essential for robust email delivery in high-traffic stores, as not addressed in the README.
Relies entirely on external SMTP servers, so email delivery is vulnerable to provider outages or rate limits without built-in fallbacks, posing a reliability risk.
Frequently Asked Questions
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