

In case you open the email while it was stuck in the process of sending, then the default setting of Outlook will immediately stop it. They are scanning and blocking some important ports and emails just by considering them as a kind of threat. Often some other software like anti-virus program begin to interfere with the currently running platforms. These errors also occur when the authentication or security settings have been incorrectly configured in Office 365 and Outlook. The maximum limit for any email attachment is 20MB. Sending photos, videos and other documents through emails is a frequent practice but Outlook cannot handle if you try to send a large sized attachment. Due to a limited connection, emails are not being sent and continue to stay in the Outbox. The prime reason for most of the errors is a poor connection whether it is with the router, service provider, email server or settings.

A few common ones have been listed below. There are several reasons which are responsible behind all the trapped emails in Outbox. Causes of “Office 365 messages stuck in Outbox” Outbox is listed on the left side panel of the Outlook application. Many a times, emails get stuck in this folder until the user manually clicks on Send or Receive to transfer the message. Outbox is often referred as a ‘holding folder’ since it holds an email until the time (span of a few microseconds) it gets automatically sent. Some of you must have just started using Outlook and not aware about all the folders which are present in this application. To prevent this situation, you must read along to understand its causes and methods to fix it quickly. The error is a common one and can occur due to numerous reasons. This issue can be tolerated if the emails remain in Outbox folder for a few minutes, but if it is taking more time, then it can turn into a nightmare. But sometimes during a problem in the email server, the sent emails get stuck in the Outbox folder and an error message is displayed- “Office 365 messages stuck in Outbox”. When you use Microsoft 365 account, it is managed in the Outlook application for the transfer of emails. Nobody wants to be part of such a situation. But if that gets hampered, the entire communication cycle comes to a major halt which can turn into a loss-making incident for many companies. Timely sending and receiving emails is the backbone of any email client.
