Outlook provides a fine and hassle-free facility for sending and receiving email facilities to its account holders. Sometimes you may come across Outlook not sending emails or the email stuck in outbox problem. This blog will provide you detailed information on why you are not able to send any emails through Outlook and how you can solve it by yourself quickly.


Reasons why you are facing Outlook not Sending Emails Error

Outlook is not sending emails because of many possible reasons. Some of the most common reasons among them are listed below:

  1. Connectivity issues Outlook
  2. Error related to Authentication
  3. Wrong password.
  4. The input of the incorrect recipient’s email address.
  5. Inappropriate configuration of Outlook Email Settings.
  6. With the disabling of TCP/IP Protocol, the users will not be able to send any emails or emails to their clients.
  7. Outlook Server is down.

Related Post: How to Fix Outlook Send/Receive Error?

Why can’t I send Emails from Outlook?

The major reason behind it is a poor network connection. You are required to check your internet connectivity as a bad internet connection won’t let you send emails through Outlook in anyways. Also, check that your Personal Computer has strong bandwidth of internet before you try again to send your emails to your clients.

8 Solutions to Fix Outlook Not Sending Emails Error

We recommend you to go through the detailed guide provided below and follow them to fix your problem:

Solution 1: Try sending the email again

If you fail to send an email the first time from Outlook, please try to send it once again. Here’s how:

  1. Give a right-click onto the email that can be seen in outbox which otherwise is supposed to be in the Sent box
  2. Then, tap on “Move” to choose the “Drafts” folder.
  3. Next, open the email available in the Drafts folder and then press the “Send” button.
  4. Re-check to know if the mail that you were sending is now in the “Sent” folder or not.
  5. If it is still in the Outbox, then move to the next solution.

Solution 2: The recipient’s email address should be double-checked

It is most common to know that when there is a typing error in the recipient email address, then Outlook can’t send emails. The email will be barred from Outlook to send. So we suggest you enter the correct email address and check it again without making a mistake in the input.

Solution 3: You need to recheck your Outlook connection

  1. Firstly, launch Outlook with correct credentials for login
  2. Take a quick look at the lower right corner of the Outlook window. If you see any of the three options of “Disconnected”, “Working Offline”, and “Trying to connect”, that means Outlook is not connected to server.
  3. Bringing it online, by clicking on the “Send/Receive” tab.
  4. Press single tap on “Work Offline” in the group of Preferences.
  5. In the lower right corner, you can see “Connected to Server.”
  6. Click on the “Send/Receive All Folders” tab in the group of “Send & Receive”.
  7. Now check your sent and outbox folder for email delivery.

Solution 3: Outlook attachment glimpses

The email size files have certain limitations in Outlook. One can send 20 megabytes for internet profiles, like that of Gmail, Yahoo, and Hotmail, and can send 10 MB for exchanging accounts. After you are attaching a file in your new email and trying to send it, you may see the display of an error message. The error issue can be commonly faced due to the large file size. So, for a smooth sending experience of your email without any hesitation or disruption, increase the size limit of your Outlook account. And then send the email to the recipient.

Solution 4: Syncing Outlook Password

  1. Go to the “File” menu.
  2. Go to the Account Settings > Account Settings and click on the “Email” tab.
  3. Next, select the specific email account on which you want to change the password.
  4. Click on the “Change” option.
  5. Now you have to enter a new and updated password in the “Password” box.
  6. Click on Next, Close, and Finish.
  7. Click on the “Send/Receive All Folders” button from the upper-left corner or press the F9 key and try sending your email.

Solution 5: Repairing of Outlook

  1. Close all the applications on Microsoft Office if any of them are running on your Windows 10 device
  2. Open the Windows Search box and enter “Apps & Features.”
  3. From the list, choose the “Apps & Features” tab.
  4. List of apps that are installed and the features, find “Microsoft Office.”
  5. Now, select the “Modify” option.
  6. Press “Yes” if it is putting the question, “Do you want to allow this app to make changes to your device?
  7. Choose Online Repair and click on Repair.
  8. Now, restart Outlook once the repair process gets successfully done.
  9. In order to check if your Outlook Emails Not Sending problem is resolved or not, send an email now.

Solution 6: Creating a new email profile or account

  1. Go to the Windows Search bar, here type Control Panel, and then hit the OK
  2. From the Control Panel, choose “User Accounts” and then press “Mail.”
  3. In the Mailing window, choose the “Add Account” option
  4. From Add Account window, choose “Email Account.”
  5. Next, fill up all your details like your Name, Email Address, and Password. After all the information in the box is filled in, press the “OK” button.
  6. Select “Manually Configure Server Settings.”
  7. From the “Choose Service” option, select Internet E-mail, and then tap on “Next.”
  8. Fill the spaces in the “Internet E-mail Settings” dialog box.
  9. Check that the Account Type setting is “POP3.”
  10. Once you confirmed, press “Next” and then choose “Finish.”
  11. Now, go back to the Mailing window, choose the profile that has just been created. Press “OK.”
  12. Now try to send your emails.

 Solution 7: Ensuring that your TCP/IP Protocol is enabled

  1. In the Windows Search, enter “ncpa.cpl”, and then press the “Enter” button.
  2. On your Internet connection, right-click and go to the “Properties” option
  3. Just below the “Networking” tab, confirm that the Internet Protocol Version 6 (TCP/IPv6) is selected. If it is not selected, then click on the checkbox and select it.
  4. Next, press OK to save the changes that you made.
  5. In order to check if your Outlook Emails Not Sending problem is resolved or not, send an email now.

Solution 8: Turn on your email authentication

Here’s the complete process to do it right:

  1. In Outlook, go to the “Tools” menu
  2. Choose the “Email Accounts” tab.
  3. Press on “View” or change the existing email account
  4. Then, click the “Next” button.
  5. Next, you are required to select an email account, and click on the “Change” button
  6. Go to the option of “More Settings.”
  7. Navigate to the “Outgoing Server” tab.
  8. On the option “My outgoing server (SMTP) requires authentication”, tick it
  9. Choose the “Use the same setting as my incoming mail server” option.
  10. Next, press OK, Apply, & Finish for saving and binding up the process.
  11. You can now fix your Outlook not sending emails error.

Also Read: Fix Outlook nor Receiving Email Problem

Final Words

We hope that the above-given solution helped you in resolving the email sending problem in Outlook. Fixing Errors is committed to providing you a reliable and easy solution for your PC, printer, and emails.