How to check mail size in office 365

There are a few ways to check the size of an email in Office 365:

Method 1: Check the email size in the Outlook client

  1. Open Outlook and navigate to the email you want to check.
  2. Right-click on the email and select "Properties" (or press Ctrl+Shift+F).
  3. In the "Properties" window, click on the "Details" tab.
  4. Look for the "Size" field, which will display the size of the email in bytes.

Method 2: Check the email size in the Outlook web app

  1. Log in to the Outlook web app (https://outlook.office365.com) and navigate to the email you want to check.
  2. Click on the three dots next to the email subject and select "View message source".
  3. In the message source window, look for the "Content-Type" header, which will display the size of the email in bytes.

Method 3: Use PowerShell

  1. Open PowerShell and connect to your Office 365 tenant using the following command: Connect-ExchangeOnline -UserPrincipalName <your_username> -ShowProgress $true
  2. Use the following command to retrieve the email size: Get-MailboxFolderStatistics -Identity <email_address> -FolderType "Inbox" | fl Name,TotalItemSize

Replace <email_address> with the email address of the user whose email you want to check.

Method 4: Use the Office 365 admin center

  1. Log in to the Office 365 admin center (https://admin.microsoft.com) and navigate to the "Mail" section.
  2. Click on "Mailbox" and then select the user whose email you want to check.
  3. Click on the "Mailbox settings" button and then select "Mailbox size".
  4. The "Mailbox size" page will display the total size of the user's mailbox, including the size of all emails.

Note: The size of an email is typically measured in bytes, kilobytes (KB), or megabytes (MB).