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WPO365
Send WordPress emails from a M365 / Exchange Online Mailbox using Microsoft Graph, leveraging OAuth for authentication which is more secure than SMTP
The facts
- Rating
- 4.9★ from 39
- Active installs
- 10k+
- Price
- Free
- Last updated
- 23 Jul 2026
- Added
- Feb 2022
- Requires WP
- 5.0
- Tested up to
- WP 7.0.4
- Requires PHP
- 7.4
- Downloads
- 258,675
Our analysis
AI-assistedWPO365 | Microsoft 365 Graph Mailer is a WordPress plugin that allows you to send transactional emails from Microsoft 365 or Exchange Online accounts using the Microsoft Graph API. This method replaces traditional SMTP due to the discontinuation of basic authentication by Microsoft.
The plugin offers features such as sending HTML formatted emails, saving sent emails in the mailbox's Sent Items folder, and the ability to send attachments. It also includes tools for tracking email delivery and provides an easy setup process with a guide and video.
Best for: This plugin is suitable for users of Microsoft 365 or Exchange Online who need to send transactional emails from their WordPress site.
What it does well
- ✓Sends emails using Microsoft Graph API
- ✓Supports both delegated and application-level permissions
- ✓Emails can be sent as HTML
- ✓Saves sent emails in the Sent Items folder
- ✓Allows sending attachments
Where it falls short
- •Limited information on premium extensions functionality
- •No details on support or updates beyond July 2026
Verdict
WPO365 | Microsoft 365 Graph Mailer provides a modern solution for sending emails from WordPress using Microsoft services. It is a practical choice for those reliant on Microsoft 365 for their email communications.
From the developer
Marco van Wieren's own description of WPO365, lightly tidied.
WPO365 | MS GRAPH MAILER provides you with a modern, reliable and efficient way to send WordPress transactional emails from one of your Microsoft 365 / Exchange Online / Mail enabled accounts.
The plugin re-configures your WordPress website to send emails using the Microsoft Graph API instead of – for example – SMTP. Sending WordPress emails using the Microsoft Graph API has become the only available alternative after Microsoft has disabled basic authentication (username and password) over the SMTP protocol.
Delivery
- Send WordPress transactional emails from one of your Microsoft 365 Exchange Online / Mail enabled accounts using Microsoft Graph instead of – for example – SMTP.
- Choose between delegated (send mail as a user) and application-level (send mail as any user) type permissions.
- Or: Select either a Microsoft 365 account or a personal Microsoft account, like Hotmail.com or Outlook.com, to send WordPress emails.
- Or: Configure RBAC for Exchange Online and authorize as an application but with a limited scope e.g. one specific mailbox.
Send as HTML
- Send emails formatted as HTML.
Save to sent items
- Emails sent will be saved in the account’s mailbox in the Sent Items folder, further helping to track (successful) mail delivery.
Attachments
- Send files from your WordPress website as attachments.
WPO365 insights
- See what matters, when it happens Track key WPO365 events like sent emails with WPO365 Insights more
Configuration / test email delivery
- Easy configuration with detailed step-by-step Getting started guide and video.
- Send test email to recipients incl. CC, BCC and attachment.
ADD FUNCTIONALITY WITH PREMIUM EXTENSIONS
The following features can be unlocked with the WPO365 | MAIL extension.
Tagged as
quality
Security
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