
Having your email stuck in the Outbox on your Mac can be frustrating, especially if you're trying to send an important message. This issue can occur due to various reasons, including a faulty email account setup.
One common cause of this problem is an incomplete or incorrect email account setup, which can be resolved by re-entering your account credentials.
Another reason for emails getting stuck in the Outbox is a slow or unresponsive internet connection.
If you're experiencing this issue, try restarting your Mac or checking your internet connection to see if it resolves the problem.
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Troubleshooting Mail Issues
First, ensure you have a stable internet connection, as internet connectivity issues can disrupt communication between your device and the email server.
Check your Wi-Fi signal strength, network congestion, and router problems, as these can all impact your ability to send and receive emails.
If your Mail app is still not sending emails, try specifying the location and fixing mail server errors in Apple Mail by following these steps.
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To do this, go to your Mail app, click on the Mail option, and then proceed to the Settings icon. Next, hit on the Accounts option and select an account, then tap on the Server Settings, and select the outgoing Account pop-up menu.
If the issue persists, try running Repair Permissions on your Mac to fix any potential permission issues.
To do this, open the Disk Utility, located at Applications, and then go to Utilities. Select the First Aid tab, pick a volume to run Repair Permissions on, and tap the Repair Disk Permissions button.
By following these steps, you can troubleshoot common issues that may be causing your mail to get stuck in the outbox.
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Fixing Mail Stuck in Outbox
If your Mac's email is stuck in the outbox, don't worry, it's a common issue. One possible cause is a corrupted Mail Preference File, which can be found at /Users/user_name/Library/Preferences. For example, if your Mac's username is Hary, the path would be /Users/Hary/Library/Preferences.
To fix this issue, try removing the corrupted file. The preference file is under the name of com.apple.mail.plist. After you're done, try sending Mail again, and you might need to enter the recent changes made to the Mail settings.
However, if the issue persists, you can try reinstalling Outlook, which has helped people with similar issues. Alternatively, removing and re-adding the profile can also resolve the problem.
Another possible cause is poor connectivity or large attachments, which can stop the email from sending. If you're using an IMAP account, you might need to check your Outlook profile settings to ensure they're correct.
If none of these solutions work, you can try removing and reconnecting your email account. This will refresh your email account settings, which can solve the underlying issues that are causing sending failures.
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Checking and Updating Settings
To resolve the issue of mail stuck in outbox mac, checking and updating settings is a crucial step. You can start by ensuring that your DNS settings are correct, as incorrect settings can prevent emails from being sent. For Google's DNS, enter the 8.8.8.8 address.
Outgoing server settings also play a significant role in sending emails. Check your outgoing server settings and ensure that the SMTP server list is correct. You can do this by going to your Mail app, clicking on the Mail option, and then proceeding to the Settings icon.
Here are the steps to specify the location and fix mail server errors in Apple Mail:
- Go to your Mail app on your mac operating system.
- Click on the Mail option and then proceed to the Settings icon.
- Hit on the Accounts option and select an account.
- Tap on the Server Settings, and select the outgoing Account pop-up menu.
- In the New Window, click the Edit SMTP Server List.
- Preview the information for the server; change the settings as directed by your email account provider.
Software Conflicts
Software Conflicts can cause syncing problems with the Mail app, leading to issues sending emails. These conflicts can arise from other email clients, security software, or system utilities installed on your Mac.
Conflicts between the Mail app and other software can interfere with the proper functioning of the Mail app and prevent it from connecting to the SMTP server.
Resetting firewall and security settings can help resolve issues with sending emails, but conflicts with other software can still occur.
Ensuring that ports 25, 465, or 587 are open in your firewall settings can often resolve issues with sending emails.
You may need to contact your email account provider to change the outgoing mail server settings in Mail settings if the issue persists.
Software Conflicts can be caused by conflicts with other email clients, security software, or system utilities installed on your Mac.
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Internet Connectivity Issues

A stable internet connection is essential for your email app to work properly. Poor connectivity can disrupt communication between your device and the email server.
If your device has internet connectivity issues, such as a weak Wi-Fi signal or network congestion, it can cause problems with sending and receiving emails. This is especially true for devices with weak Wi-Fi signals.
Router problems can also lead to internet connectivity issues. These problems can be caused by a faulty router, incorrect settings, or physical obstructions.
If you're experiencing internet connectivity issues, try restarting your router or switching to a different network. This can help resolve the problem and get your email app working smoothly.
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Check Outgoing Server Settings
Incorrect SMTP settings are among the most frequent reasons why Apple Mail isn’t sending emails. This is because these settings define how Mac Mail interacts with your email provider's server to send emails.
To check your outgoing server settings, go to your Mail app on your Mac operating system, click on the Mail option, and then proceed to the Settings icon. From there, hit on the Accounts option and select an account.
Tap on the Server Settings, and select the outgoing Account pop-up menu. In the New Window, click the Edit SMTP Server List. Preview the information for the server; change the settings as directed by your email account provider.
Tip: Do not remove a server that is already in use by an account, until you are ready to add another server for the account.
Here's a quick checklist to ensure you're on the right track:
- Go to Mail > Preferences > Accounts
- Select an account and click on Server Settings
- Tap on the outgoing Account pop-up menu and select Edit SMTP Server List
- Preview the information for the server and adjust settings as needed
By following these steps, you'll be able to check and update your outgoing server settings, helping you resolve any issues with Apple Mail not sending emails.
Update DNS
To update your DNS settings, start by pressing Options + Command + Esc keys together. This will open the Activity Monitor, but don't worry, we're not here to monitor anything.
You'll need to click the DNS option and tap the plus (+) button to check out DNS server lists. For Google's DNS, enter the 8.8.8.8 address, and once you sort it out, you'll see the network improvement in your MacBook.
The goal is to resolve any errors, like an email stuck in the outbox on your Mac.
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Resolving Authentication Issues
The first step to resolving authentication issues is to check if your account is properly authenticated with the email server.
Navigate to the tools menu, then account settings, and finally email.
Double click on the account and go to the tools menu, then account settings, and then email.
Ensure your outgoing server details exactly match those recommended by your email provider.
Do not check "regular secure password authentication".
Check the outgoing server port number to see if it's correct.
The usual port number for SMTP accounts is 25.
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Resetting and Restarting Mail
Resetting and Restarting Mail can be a simple yet effective solution to fix the issue of mail stuck in outbox Mac.
Try force stopping the Mail application and restarting it. This can be done by selecting the Mail application in the force quit window and clicking the force quit button.
Using the inbox repair tool can also help resolve this problem, ensuring each file is safe or free from errors. If the repair tool is not working, consider using a reputable email repair tool for Macs.
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If you're experiencing issues with your Apple Mail app not sending emails, try resetting the Mail app by going to the Mail option, then to Settings, and finally selecting the Accounts option. From there, select an account and tap on the Server Settings, then select the outgoing Account pop-up menu.
You can also try repairing disk permissions in the Disk Utility, located at Applications, and then go to Utilities. Select the First Aid tab, pick a volume to run Repair Permissions on, and tap the Repair Disk Permissions button.
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Force Stop and Restart Application
Force stopping the application and restarting it can resolve the issue. This process involves choosing the mail from the force quit window and clicking the force quit button.
If the problem persists, go back to Outlook and check if the issue is resolved.
Reset Firewall and Security Settings
Resetting your Mac's firewall and security settings can help resolve issues with sending emails. This is because firewall or security settings may be blocking the Apple Mail app from accessing necessary network resources.
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Firewall settings can block email traffic on specific ports, which is often the case. The ports 25, 465, or 587 should be open to allow the Mail app to communicate with the email server.
If you're using a separate firewall software or a router with built-in firewall, it may be blocking email traffic. You should check with the manufacturer or administrator for more information.
To resolve issues, try resetting your firewall and security settings. This can often resolve issues with sending emails by giving the Mail app the proper permissions to communicate with the email server.
Common Issues and Fixes
Mac users often experience frustration when their emails get stuck in the outbox. This issue can be caused by various reasons, including poor connectivity, large attachments, or incorrect settings.
If you're experiencing this problem, try checking your email account provider's settings in the Mail app. You can do this by going to the Mail app, clicking on the Mail option, and then proceeding to the Settings icon.
Another possible reason for emails getting stuck in the outbox is a problem with your Outlook profile. This can be resolved by reinstalling Outlook or removing and readding the profile.
Antivirus programs can also cause issues with sending emails. If you suspect this is the case, try disabling or uninstalling the antivirus program.
Sometimes, emails get stuck in the outbox due to a conflict with Outlook add-ins. To resolve this, try removing or turning off such add-ins.
Here are some specific steps you can take to fix this issue:
- Reinstall Outlook
- Remove and readd the profile
- Check for errors in send & receive
- Disable or uninstall antivirus programs
- Remove or turn off Outlook add-ins
If none of these solutions work, you may need to contact Apple support or consult with a professional.
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