I did a search on this forum and tried several of the suggestions but non appeared to work. Some email providers (such as your ISP or even Gmail) won't let you send messages larger than a certain size. Adding pictures and large attachments to your message can prevent you from sending that message (and any messages sent after the large message). If you’re using cPanel, Outlook is most likely setup with POP3 account or IMAP. I’ve seen some providers have issues when auto Send/Receive is set to less than 5mins. Outlook accounts can have up to 100GB of storage per mailbox.

Check your blocked users list

But if you’ve never cleaned your inbox, then you might have maxed out your storage limit. So if you’re waiting for an email from someone, you may want to check if the sender is registered on your blocked users list. But still, it’s worth checking if other users are currently experiencing similar issues with Outlook. Microsoft comes with a great option called Work Offline. Once enabled, this setting lets you disconnect from the server. Which means that you won’t be able to receive new messages.

Is classic Outlook disconnected? Check the bottom of your Outlook window

And in most cases, that’s where it belongs. For more information on creating a new email profile, see Create an Outlook profile. Please go to Reset a forgotten Microsoft account password for more information.

Have you changed your password recently?

For some users, resolve Outlook not sending emails fast e-mails do not arrive without manually sending and receiving them. If you are having sync issues, you can force a manual sync by selecting the Sync button via the View tab on the Ribbon. A status message appears at the bottom of the message list while Outlook is syncing. For more information, please go to Sync to manually check for new mail and to send messages in Outlook.

Can't send mail in Outlook.com

We've presented the methods in order of quickest to most in-depth. For details around general troubleshooting, visit Troubleshooting Outlook issues for more information. To get support in Outlook.com, click here or select Help on the menu bar and enter Exchange connectivity diagnostic your query. If the self-help doesn't solve your problem, scroll down to Still need help?

• For some users, e-mails do not arrive without manually sending and receiving them.
• If the self-help doesn't solve your problem, scroll down to Still need help?
• If you lose your connection to the internet, classic Outlook won't be able to send your messages.
• Once enabled, this setting lets you disconnect from the server.
• So the email you’ve been looking for might just be sitting in the Other tab of your inbox.
• And in most cases, that’s where it belongs.
• For details around general troubleshooting, visit Troubleshooting Outlook issues for more information.
• A status message appears at the bottom of the message list while Outlook is syncing.

Repair your classic Outlook program

Articles, examples, tutorials, and inspiration from our emailing experts. Create your account and connect with a world of communities. Find solutions to common problems or get help from a support agent. Occasionally, the Outlook program may need to be repaired. Repairing is a simple process but may take as Office 365 Sync Errors Fix long as half an hour to complete.





To repair your Outlook profile or create a new one, see Fix your Outlook email connection by repairing your profile. Go to your Outbox and then open the stuck email messages. If that message has an attachment that's larger than 20MB, delete the attachment and either attach a smaller file or attach a link to the attachment.





The methods provided in this article can be used to troubleshoot the error messages listed in the following table. But every once in a while, the Microsoft filters get it wrong and accidentally label a normal email as spam. To start Outlook in safe mode, press the Windows key on your keyboard. In the search box, type outlook.exe /safe, then press Enter. If you've changed your password on the website for your email account, you'll need to change it in new Outlook, too. Sign up for tips and industry insights to level up your emailing skills.