Email | Configure Microsoft Graph Mailer for WordPress

Video Walkthrough

Please follow along with the video walkthrough below, demonstrating how you can send emails from another account – an account different from the account authorized to submit emails to Microsoft Graph.

Sending email from another account – for example a Shared Mailbox – is a premium use case that requires the WPO365 | MAIL plugin to be installed and activated. Note that the premium email features are also unlocked by any of the popular premium tiers.

Installing the Premium Mail Plugin

• Purchase and download the WPO365 | MAIL plugin.
• Go to Plugins → Add New → Upload Plugin in WordPress.
• Upload and install the plugin.
• Verify that WPO365 Mail (premium extension) appears in the plugins list.

Exploring New Mail Configuration Options

• Open the WPO365 > Mail configuration page.
• Confirm that additional premium configuration options are now unlocked and available.

Configuring a Shared Mailbox as the Sender

• Enable the option Send from a Shared Mailbox.
• Enter the shared mailbox email address, e.g. [email protected].
• Confirm the Shared Mailbox configuration in Microsoft 365:
  • Open Microsoft 365 Admin Center.
  • Navigate to Teams & Groups > Shared Mailboxes.
  • Verify that the shared mailbox exists.
  • Ensure that the user that you authorized to submit emails to Microsoft Graph is a member of the shared mailbox.

Saving and Testing the configuration

• Scroll down and click Save configuration + Send test email.
• Notice that an error appears when you didn’t enter the email address of a test recipient. This is expected, because saving the configuration will always attempts to send a test email.
• Enter a test recipient, e.g. [email protected].

Verifying Delivery

• Confirm that the email submission to Microsoft Graph was successful.
• Switch to the recipient’s mailbox – for example using Outlook on the Web (outlook.office.com).
• Verify that the email was received and was indeed send from the Shared Mailbox.

Allowing Applications to Override the “From” Address

• Return to the WPO365 > Mail configuration page.
• Uncheck the option Send from a shared mailbox. Now emails will again appear to the recipient as sent from the email address belonging to the authorized user account.
• Enable Allow sending from all mailboxes. This allows plugins – for example a Contact Forms plugin – to define a “From” email address that then overrides the default “From” i.e. the email address of the authorized account.
• Scroll down and click Save configuration + Send test email.
• Notice that an error appears when you didn’t enter the email address of a test recipient. This is expected, because saving the configuration will always attempts to send a test email.

Example: Contact Form 7 with a Custom “From” Address

• Install and activate Contact Form 7.
• Go to WP Admin > Contact > Default Contact Form.
• Open the Mail tab.
• Set the From address to – for example – a Shared Mailbox e.g. [email protected]
• Configure the form to:
  • Send the main email from [email protected].
  • Send a copy to the user’s email address using [your-email] using the Mail2 option.
• Save the form configuration.

Publishing the Contact Form

• Copy the Contact Form shortcode.
• Create a new post or page.
• Paste the shortcode into the page.
• Open the page and view the contact form.

Submitting and Verifying the Form

• Fill out the form:
  • Name: First Lastname
  • Email: [email protected]
  • Message: “This is a test message”
• Submit the form.
• Confirm the successful submission message.
• Open the recipient’s mailbox.
• Verify receipt of the email and ensure that the sender appears as [email protected].