Why is my Outlook not sending emails ?

Is your Outlook not sending emails? You’re not alone. This frustrating issue can grind your workday to a halt, leaving you wondering what went wrong.

Whether you’re dealing with error messages, emails stuck in your outbox, or a seemingly unresponsive send button, we’ve got you covered.

Here are some quick methods you can try to fix Outlook not sending emails issue:

• Double-check recipient’s email and attachments.

• Ensure stable internet connection and restart router if needed.

• Review SMTP details under Account Settings in Outlook.

• Toggle off Offline mode in Outlook if enabled.

• Restart Outlook and computer to clear glitches.

• Start Outlook in safe mode to troubleshoot add-in issues.

• Compress large attachments or use file-sharing.

Read the blog further to know the detailed steps to fix this issue.

Quick fixes for Outlook not sending emails

Some quick fixes can help you in resolving your issue as soon as you meet up the requirement. Please check out these pointers; may it help you before following other mentioned steps in the blog.

• In the beginning, if you are not able to send an email on Outlook; you should check for Outlook connection. The Outlook connection icon is available on the right above of the home screen.

• Please check your internet connection; take internet speed test, if possible. 

• Sometimes cache and other relevant aspects prevent the Operating system from performing the day-to-day task.

• If you have attached more than 20-25 MBs file, that may be a reason for not sending emails on Outlook.

Also Check: How to set automatic replies in Outlook ?

Five Solutions to fix Outlook not sending emails.

1. Start Outlook in Safe mode
2. Create a new I’d
3. Repair OST file
4. Check for Authentication & Protocol 
5. Use different email service

A detail information with graphical representations are provided below.

Start Outlook in Safe mode

In case you cannot send emails from Outlook; you can also try to send an email using Safe mode. To use Safe mode, follow the mentioned steps in the below guidelines.

• Use your keyboard and give command Windows +R.

• Now, type “Outlook /safe” in the command box appear on the home screen, click the “Ok” button.

Note: Please input the same command on Outlook as mentioned above; and use the space bar after Outlook in the command.

Also Check: How to change profile pic in Outlook ?

Create a new I’d

Experts always recommend Outlook users have an alternate email address, as Outlook IDs often become corrupt due to different factors.

If you have another email address, you can use it to send an email when facing the ‘Outlook not sending emails’ error message, which can be resolved by adjusting your email account settings and checking email servers.

Moreover, we have provided steps to create a new email ID here; therefore, follow the instructions to create one.

• Firslty, type “Control Panel” in the search bar.

• Now, choose the “User Accounts” option.

• On this page, click on the “Mail 32-bit” then click on the “Show Profiles…” on the prompt box.

• Click on the “Add” option, enter “Profile name” in the prompt box, click the “OK” button.

• Enter detail according to the boxes, and tap on the “Next” button. 

• Now, click the “Next” .

This can help manage email attachments, email messages, and address issues with email providers and internet providers.

Use the search box to find specific settings and ensure you see a check mark indicating the successful setup of your new email address.

Also Check: How to change password on Outlook ?

Repair OST file

OST and PST files are crucial components of Outlook that can affect your mailing service and performance; therefore, you should check the file status and repair it to fix Outlook issues.

Performing the steps mentioned below will help you out in repairing the OST file.

Follow the below-mentioned points to run the command.

Note: Before performing the steps mentioned below, kindly “Exit” from Outlook.

• Choose the command as per your Windows version and put it in the search bar of File explorer. 

Outlook 2010, Outlook 2016 and Outlook 2013: Repair Outlook Data Files command (.pst and .ost)

1. 2019: C:\Program Files (x86)\Microsoft Office\root\Office16
2. 2016: C:\Program Files (x86)\Microsoft Office\root\Office16
3. 2013: C:\Program Files (x86)\Microsoft Office\Office15
4. 2010: C:\Program Files (x86)\Microsoft Office\Office14
5. 2007: C:\Program Files (x86)\Microsoft Office\Office12

Note: Here, we have mentioned 5 commands that will help you in finding OST file on your Windows system.

• After running the above command, navigate “Scanpst.exe” and open as “Run as administrator”.

• On the next page you will get “Browse” option, here choose the file for repairing, and hit “Open”.

• Hit “Start” option.

• Click “Repair”.

• Now, click “OK”.

Use different email service

Still, if you could not get the desired outcome after following the above solution, we would recommend you to use a different email service for a while; as “Outlook not sending emails” is a temporary issue and can resolve in a while.

This issue could be related to online mode, outlook add-in, outgoing server settings, outgoing email, email password, junk mail, stuck mail, or corrupt PST file.

Conclusion

Outlook not sending emails can be a frustrating experience, but with the solutions we’ve explored, you’re now equipped to tackle this problem head-on.

Remember to start with the quick fixes like checking your internet connection, reviewing recipient details, and restarting Outlook.

If those don’t work, try more advanced solutions such as starting Outlook in Safe mode, creating a new ID, or repairing your OST file.

Don’t forget that sometimes the issue might be temporary, so using an alternative email service for urgent messages can be a practical workaround.

By following these steps, you’ll likely resolve most Outlook sending issues and get back to smooth, uninterrupted email communication.

Reference:

Frequently Asked Question’s (FAQ’s)