WPO365 | MICROSOFT 365 GRAPH MAILER
Download WPO365 | MICROSOFT 365 GRAPH MAILER 6.1Description
At a glance
WPO365 | MICROSOFT 365 GRAPH MAILER v6.1 is a free WordPress plugin with 10K+ active installs, 4.9/5 rating from 39 reviews, updated September 5, 2026, requires WordPress 5.0+ & PHP 7.4+. Download the latest GPL version below — free, with live demo included.
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.
- Daily refresh of Microsoft Graph access and refresh token.
- Auto-flagging and suppression of duplicate emails.
- Auto-retry when throttled (HTTP 429).
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.
WPO365 INSIGHTS
- Get WPO35 Alerts in your inbox when email delivery is failing more
Auto-Retry
- Log every email sent from your WordPress website, review errors and (automatically) try to send unsuccessfully sent mails again.
LARGE ATTACHMENTS
- Add support to send WordPress emails with attachments larger than 3 MB using Microsoft Graph.
SEND FROM ALIAS
- Send emails from an alias address (but submit to Microsoft Graph as the authorized user).
SEND AS / SEND ON BEHALF OF
- Send email as / on behalf of another user or distribution list.
SHARED MAILBOX
- Send email from Microsoft 365 Shared Mailbox.
STAGING MODE
- Mail Staging Mode is useful for debugging and staging environments. WordPress emails will be logged and saved in the database instead of being sent.
DYNAMIC SEND-FROM
- Allow forms to override “From” address e.g allow Contact Form 7 to dynamically configure the account used to send the email from (requires application-level Mail.Send permissions).
MAIL THROTTLE
- Throttle the number of emails sent from your website per minute.
WP-CONFIG FOR AAD SECRETS
- Further improve overall security by choosing to store Azure Active Directory secrets in your WordPress WP-Config.php (on disk) and have those secrets removed from the database.
SEND AS BCC
- Send emails as BCC instead and prevent reply-to-all mail pollution.
REPLY-TO
- Configure a default reply-to mail address if this should differ from the account’s mail address that is used to send WordPress transactional emails from.
Prerequisites
- We have tested our plugin with WordPress >= 5.0 and PHP >= 5.6.40.
- You need to be an Entra ID Tenant Administrator to configure both Azure Active Directory and the plugin.
Support
We will go to great length trying to support you if the plugin doesn’t work as expected. Go to our Support Page to get in touch with us. We haven’t been able to test our plugin in all endless possible WordPress configurations and versions so we are keen to hear from you and happy to learn!
Feedback
We are keen to hear from you so share your feedback with us on LinkedIn and help us get better!
Open Source
When you’re a developer and interested in the code you should have a look at our repo over at WordPress.
Frequently asked questions
What do I get when I download WPO365 | MICROSOFT 365 GRAPH MAILER?
WPO365 | MICROSOFT 365 GRAPH MAILER 6.1 is the latest version. It is a WordPress plugin you can download here free of charge under the GPL license, with the complete feature set included and no trial limitations. It holds a 4.9/5 rating from 39 user reviews.
Does WPO365 | MICROSOFT 365 GRAPH MAILER cost anything?
No. WPO365 | MICROSOFT 365 GRAPH MAILER 6.1 is 100% free — the full GPL version, not a trial or demo. There are no download limits, no accounts to create, and no upsells during the download.
How do I install WPO365 | MICROSOFT 365 GRAPH MAILER 6.1?
Download the ZIP file from this page, then in your WordPress dashboard go to Plugins → Add New → Upload Plugin, choose the file, click Install Now, then Activate. The plugin works immediately after activation — no license key or extra setup is required for the core features.
What are the requirements for WPO365 | MICROSOFT 365 GRAPH MAILER?
WPO365 | MICROSOFT 365 GRAPH MAILER 6.1 requires WordPress 5.0 or higher and PHP 7.4 or higher. Most modern WordPress hosts already meet these versions. Running older versions may cause features to break, so update WordPress and PHP first if your site is behind.
When was WPO365 | MICROSOFT 365 GRAPH MAILER last updated?
Version 6.1 was last updated on September 5, 2026. This page is refreshed automatically, so the download here always matches the newest version we have verified.
Is the WPO365 | MICROSOFT 365 GRAPH MAILER download safe?
The file is sourced directly from the official WordPress.org repository — the same file the developer published. It is served unmodified, so what you install here is byte-identical to the official release.
Technical details
| Version | 6.1 |
|---|---|
| Last updated | September 5, 2026 |
| Active installs | 10,000+ |
| Rating | ★★★★★ 4.9/5 (39 reviews) |
| Requires WordPress | 5.0 or higher |
| Requires PHP | 7.4 or higher |
| Author | Marco van Wieren |
| Tags | email, microsoft, phpmailer, smtp, wp_mail |
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