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Unable to send email from Outlook and stuck in the outbox. <br />
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Question how to check the size limitation when sending out a email in the exchange Admin Center.
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Unable to send email from Outlook and stuck in the outbox. 

Question how to check the size limitation when sending out a email in the exchange Admin Center.

Unable to send email from Outlook and stuck in the Outbox in the outlook.

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.