Manage Microsoft 365 Mails Using Graph PowerShell

Managing emails manually can be time-consuming—especially in large organizations where automation and central control are critical. Microsoft Graph PowerShell empowers IT administrators to create, read, delete, organize, and automate email operations across Microsoft 365 users using secure, script-based commands.

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If you’re looking to streamline mail-related tasks like sending emails, managing folders, or applying rules, this guide brings together the most essential scripts in one place to get you started quickly.

What is Microsoft 365 Mail Automation?

Microsoft 365 mail automation refers to the use of scripts and APIs to manage mailbox activities such as sending messages, reading inboxes, cleaning up folders, and applying routing rules—without manual intervention.

Admins can use PowerShell with Microsoft Graph to control user mailboxes programmatically, enabling fast, consistent, and repeatable processes across the tenant.

Why Automate Microsoft 365 Mails?

Automating mail operations helps administrators:

• 📩Send or schedule alerts/emails without opening Outlook
• 🧹 Clean up mailboxes automatically (e.g., delete spam or flagged content)
• 🗂️ Create folder structures or apply inbox rules for new users
• 🔍 Monitor specific mailbox events for audit or compliance
• ⏱️ Save time on repetitive tasks and reduce human errors

Whether you're onboarding users, setting up shared mailboxes, or auditing email behavior, automation is your best friend.

How to Automate Microsoft 365 Mails Using Graph PowerShell?

Here are the key operations you can perform using Graph PowerShell scripts—each linking to a full tutorial and example from M365Corner.

• Creating Emails Using New-MgUserMessage

Want to send emails from a script? This command lets you create new draft or outbound messages, add content, subject lines, attachments, and more—all through PowerShell.

👉How to create emails using New-MgUserMessage

• Reading Emails Using Get-MgUserMessage

This script helps you fetch emails from a user's mailbox, including unread messages, flagged messages, or even messages from specific senders—great for monitoring and audits.

👉How to read emails using Get-MgUserMessage

• Deleting Emails Using Remove-MgUserMessage

Need to automate cleanup? This script lets you delete specific or filtered emails—ideal for removing spam, outdated alerts, or flagged messages no longer needed.

👉How to delete emails using Remove-MgUserMessage

• Creating Email Folders Using New-MgUserMailFolder

Organize your inboxes by creating custom folders like "Invoices", "Approvals", or "Reports" automatically for one or many users.

👉 How to create email folders using New-MgUserMailFolder

• Reading Email Folders Using Get-MgUserMailFolder

Use this script to list all folders in a user's mailbox, check folder structure, or retrieve folder IDs for automation or reporting purposes.

👉 How to read email folders using Get-MgUserMailFolder

• Deleting Email Folders Using Remove-MgUserMailFolder

Clean up unused or old folders with ease. This script helps you delete folders either selectively or in bulk.

👉 How to delete email folders using Remove-MgUserMaiFolder

• Creating Email Folder Message Rules Using New-MgUserMailFolderMessageRule

Set up automated rules like “Move emails from HR to ‘HR Folder’” or “Delete all emails with a specific subject.” This cmdlet builds custom rules for mail sorting and automation.

👉 How to create folder rules using New-MgUserMailFolderMessageRule

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• Reading Email Folder Message Rules Using Get-MgUserMailFolderMessageRule

Audit and review existing folder rules using this script—great for compliance checks or debugging user inbox issues.

👉 How to read folder rules using Get-MgUserMailFolderMessageRule

• Deleting Email Folder Message Rules Using Remove-MgUserMailFolderMessageRule

Remove outdated or conflicting rules using this script. You can clean up or reset folder automation for one or more users.

👉 How to delete folder rules using Remove-MgUserMailFolderMessageRule

Final Thoughts

Managing Microsoft 365 emails using Graph PowerShell allows you to automate everything—from creating messages and folders to applying rules and cleaning up mailboxes. Bookmark this page as your go-to hub for all Microsoft 365 mail management scripts!