Error Fixed Thunderbird Can’t Send Email

Summary: Are you looking for a quick and hassle-free method for Thunderbird can’t send email? If yes, then stop wandering here and there. This blog will get an absolute and fast way to solve the query Thunderbird won’t send email.

Mozilla Thunderbird is a cross-platform, open-source, and free program that assists users with efficient management of their emails, attachments, chats, and newsgroups. Yet, it sometimes fails to adapt to the new functionalities and may show you bugs during the updations process of the updated version like Thunderbird can’t send emails, and Thunderbird outgoing server timed out.

Thus, if Thunderbird won’t send emails, this blog provides various solution steps that you can follow to check for common problems. However, you can also convert your multiple MBOX into Outlook PST at a time.

Thunderbird Sending of Message Failed- Let’s Discuss the Reasons

These are several common issues behind the issue Thunderbird stopped working. Some of them are mentioned here:

• Sometimes, users cannot send emails, while once can compose a message, send it, and get an error.
• The problem suddenly started after updating Thunderbird to their latest version,i.e., version 78.
• Thunderbird SMTP error message also pop-up due to incorrect configuration of the account.
• Possibility of issue occurs because Thunderbird cannot send mail the connection to the outgoing server failed.
• Please verify that your Outgoing server (SMTP) settings are correct and try again because there is a chance that Thunderbird outgoing server timed out.
• Thunderbird Sending of message failed SMTP server timed out happens while traveling and linking with a different ISP from a normal one.
• Inappropriate Thunderbird Settings may also be a reason behind the issue.
• Blocked Port 25 by ISP (Internet Service Provider)

Best Methods to Fix Thunderbird Can’t Send Email

These are the most researched and appropriate methods to fix Thunderbird can’t send email issues. All the solutions are 100% secure, and there are no chances of data loss. Just try the method and work with Thunderbird Mail clients efficiently and move Thunderbird to a new computer.

Method 1:- Verify the SMTP Settings

1. First of all, start the Thunderbird application to remove Thunderbird email problems sending when the mailbox is full of storage.
2. Now, go to Tools and opt for the Account Settings option.
3. Or, you can also click on the setting bars in the top-right corner.
4. Here, click on the Options and select the Account Setting option.
5. In the Account Setting wizard, you have to choose the Outgoing Server(SMTP) from the left panel.
6. Now, verify that the SMTP settings are correct for the email account configured or not.

7. After that, click on the Edit option to change SMTP details and remove Thunderbird email problems.
8. You can also go to the email provider’s website and find Mail Settings and then SMTP.
9. Finally, check the Thunderbird settings match the documented settings.

Method 2: Check that the Correct SMTP Setting or Not

1. Again, run the Thunderbird application to troubleshoot the Thunderbird SMTP error message.
2. Move to Tools and opt for the Account Settings.
3. Now, click on the three bars and go to Options>>Account Settings.
4. In the Account Settings window, choose the account name that has Thunderbird email problems sending.

5. Verify whether the correct SMTP server is used for the email address or not.

Method 3: Make Sure that There is Nothing in the Blocking Mails Folder

1. First, send an email after switching off any antivirus or firewall connection.
2. It can also remove the third-party tool as a possibility for Thunderbird can’t send emails.
3. Additionally, many ISPs block outgoing emails coming from port 25. Remove the port number to 465 or 587 after consulting the service provider.

Method 4: Delete the Set Password on SMTP

1. First of all, check the updated Thunderbird version.
2. Now, send an email to check whether the Thunderbird stopped working issues get fixed or not.
3. If it was, go to three bars and opt for the Tools and choose Option from the drop-down.

4. In the options wizard, click on the Security icon. Here, opt for the Saved Passwords button and click Ok.

5. After that, delete the SMTP password and reconfigure the email account to verify whether the Thunderbird can’t send emails.

Method 5: Reset SMTP Password

Try changing your SMTP password. It is usually done via a ‘reset email password’ form on your ISP’s support website. Follow the steps to do so:

1. First, go to the ISP site and tap on the Reset Password.
2. Now, change the password and add it to the Thunderbird. It will successfully remove your error: Thunderbird sending of message failed.

Method 6: Send Query to Support Team

1. If this list of solutions doesn’t fix the issue: cannot send mail the connection to the outgoing server failed, please create a new support request with a proper screenshot.
2. You have to send an email with their email id, mail provider(Gmail), ISP, etc.
3. Here, you also have to add on the version of firewall and antivirus.
4. Also, mention the details of Thunderbird version number and operating system.
5. After doing this, it will fix all your issues related to sending emails.

Why Manual Ways to Fix the Thunderbird can’t send emails is not Recommended Mostly?

• It does not provide the proper technical assistance properly.
• The steps are not easy to perform and may generate data loss.
• The manual solution may or may not fix the Thunderbird mail server password required.
• While changing the configuration and settings may create the chances of data loss.

An Alternate Solution to Troubleshoot Thunderbird won’t send Email

If the manual solutions can not fix your Thunderbird issue, many users think to move their Thunderbird mailbox emails into another mostly recommended email client named Outlook. This Aryson MBOX to PST Converter is a risk-free and powerful utility to transfer all the MBOX emails into Outlook PST format. Also, it can convert or import MBOX files into EML, MSG, CSV, HTML, Gmail, Office 365, AOL, Outlook.com, etc.

Conclusion

Are you finding it difficult to fix the common problems or errors: Thunderbird can’t send email? Use the different manual solutions described here and troubleshoot the issue immediately. If this list of methods doesn’t fix, then opt for the third-party solution and move all MBOX data into other email clients.

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