If you have tried this and the messages remain stuck in your outbox, then try out steps 2-5 This can be simply done by clicking sent items on the folder pane, double-clicking the message you want to resend then on the message tab click on the action, and then click resend the message. Step 1 Try re-sending the message: Did your mail return unsent? You might want to resend the message again. The steps to take might just involve simple routines that might have skipped your mind or some really basic operations. Getting your outlook to send messages without any obstructions mostly does not require any advanced measures. although it might be a bit frustrating it shouldn't be a big cause for worry. Outlook not sending messages from outbox is common among outlook users. How to Fix 'Outlook Outbox Not Sending' Error? Let’s discuss some of these DIY Outlook solutions in the next section. The good news is that most of these Outlook Express mail sending problems can easily be fixed. At times, even corrupt PST files can cause these unwanted Outlook-related issues. Other Reasons: Besides that, Outlook might not be able to send emails if your system is not connected to a stable network or the file could be used by any other program.

Firewall Issue: The installed anti-virus or firewall on your system could have blocked a vital port or component that that is needed by Outlook to send emails.ĥ. Authentication Error: The problem can also be caused if the authentication or security settings (or SSL/TSL certifications) have been expired or are wrongly configured.Ĥ. Therefore, if your email has crossed the limit, then Outlook won’t be able to send it.ģ. Large Email Attachment: By default, Outlook has a limit of 20 MB for the size of any email attachment. Wrong Configuration: If your Outlook account has not been configured properly or you have entered the wrong IMAP/POP/SMTP details, then it can cause this issue.Ģ. Before we diagnose the problem, let’s have a look at some of its leading causes:ġ. Ideally, there could be all kinds of Outlook Express mail sending problems causing this issue. Many factors contribute to your outlook not sending emails from the outbox. You might see queries like 'error messages' after you attempt to send a message. When messages get trapped in outlook, the messages take a lot of time during sending and might eventually return unsent. So you probably are not the only one reading this article and it likes presently. Why Do Emails Go To Outbox But Not Sending?įor many outlook users mail not sending and getting jammed in the outbox is a very common thing.

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