2Compress the Size of AttachmentĪs mentioned above, Outlook emails can get stuck in Outbox if the attachment size is too large. Restart your modem or try other solutions to fix the problem. If the status of the mail service is shown as Disconnected, then it could be an issue with your internet connection. In this case, navigate to the Send/Receive tab and then find and click on Work Offline option to disable it. If you cannot see the above-mentioned options, then it may be because the state of the mail server is set to Working Offline.

The mail server is online if you see any of these options. If you look in the right-hand corner of Outlook, you will either see a Connected option or it will be shown as Connected to Microsoft Exchange. The process to check the status of the mail server is pretty straightforward. That's why it is recommended that you check the status of the mail server before trying other solutions. Your emails can get stuck in Outbox if the mail server is offline. Top 4 Solutions to 'Email Stuck in Outbox' Issue in Outlook 2016/2013/2010 1Change Outlook Connection Status getting scanned by an antivirus tool, then it could cause the emails in the Outbox to get stuck. If Outlook is being used by another program e.g.The email sending process can get stuck if your Outlook send/receive settings are incorrect.A problem with the mail server can also cause this issue.To fix this, you will need to get it authenticated by the mail server. This problem can also occur if your Outlook account is unauthenticated.Sometimes an installed add-in marks the email that you are trying to send as viewed in the Outbox, hence causing the issue of it getting stuck.The large size of attachment usually slows down the sending but it can also sometimes completely halt it. Email can get stuck in Outbox if there is a large attachment.Following are some of the common reasons: There could be a number of reasons behind this issue. Reasons Why Outlook Emails Stuck in Outbox

Method 4: Using A Professional Outlook Repair Tool.

Method 3: Change the Password for Email Account.Method 2: Compress the Size of Attachment.Method 1: Change Outlook Connection Status.

Outlook 2019 stuck in processing