New in Mozilla Thunderbird 52.0

New in Mozilla Thunderbird 52.0

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This article describes the major changes that appear to users in Thunderbird version 52.0. Full details of all the changes can be found in Thunderbird 52.0. release notes.

Compared to Thunderbird version 45.0, this is a very less visible change in user interface, but instead, many long bugs and annoyances were fixed.

Mail composition

The most important change is how to include images in a composition window. The images are now included in the form of a URI, not as a reference to other messages or parts of operating system files. This allows better interoperability with office packages such as MS Office or LibreOffice. It fixes problems for long in attaching pictures to other messages. Images related to locations on the Internet will no longer be downloaded and will be automatically attached to the message. It can be transformed individually through image properties dialogue for each image or changing it globally by setting priority email.compose.attach_http_images

Since the data URI originally appears in the raw binary data user interface, it is now a small and inserts HTML dialogue in the Image Properties dialogue, for example:

New in Thunderbird 52.0


When pasting images that reference operating system files into the compose window, the image will now be blocked and a notification will be displayed:

This is to protect users from inadvertently disclosing files.

Main Message Window – Folder Pane

The folder pane now has a Folder Pane Toolbar on the top which comes preconfigured with the Folder Views switcher. The Folder Pane Toolbar can be enabled through the View menu > Toolbars.

New in Thunderbird 52.0

Main Window – Thread Pane

The Correspondents column with new icons is now the default for all new folders. There is no forced conversion. This can be switched off with the preference mail.threadpane.use_correspondents.

Calendar – Lightning – Event in a Tab

Events can now be created and edited in a tab. To enable this option, select Edit events and tasks in a tab instead of in a dialogue window in the Tools menu > Options > Calendar > General tab.


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Convert Thunderbird Mail to PDF – Export Emails ; SUPPORT @ 1-855-785-2511

Convert Thunderbird Mail to PDF – Export Emails

“As soon as would like to Convert Thunderbird Mail to PDF”, Fortunately, Thunderbird Convert to PDF tool has authority to convert, import, transfer and export, open Email files form Thunderbird to Adobe PDF format. Users face difficulty regarding How do I Convert Thunderbird messages into adobe PDF files. To help users to tackle this problem, we developed Thunderbird to PDF Converter program that convert all emails from Thunderbird to PDF with attachments.Convert Thunderbird Mail to PDF

The Thunderbird to PDF Converter is complete solution so anybody can simply convert Thunderbird Email to PDF. If you need the conversion then follow the given steps –

  • First step would be to Download the Thunderbird Converter
  • Then, convert  Thunderbird to PDF

Working Guide to Convert Thunderbird Emails

Open Thunderbird converter software (Launch Start-> All Programs-> Thunderbird tool-> Thunderbird Software). Read the steps which are given below:-Thunderbird Converter Pro Licence


Now the software provides you with two options. The first option is to select Thunderbird Emails and the second option is to choose orphan Thunderbird Emails. The options are described below:

  • Select Thunderbird files (s):- Choose this option to select individual file one by one. The users have to manually search the Thunderbird emails and choose individual files. When selecting individual files by this option the user has to select [*.*] and if the user has orphan files then select [*.mbox].
    Thunderbird Converter Pro Licence Open

  • Select folder having Thunderbird files (s):- Select this option and the software will auto-detect your all Thunderbird Profiles, and then click OK. You will be able to view Thunderbird Profile emails.Thunderbird Converter Pro Licence Browse the Folder


The next step is to choose file saving option. There are 9 options which are provided by the software and these are: PDF, HTML, EMLX, MBX, RTF, MSG, PST, MBOX, EML. Select your preferred format and click Convert.Thunderbird Converter Pro Licence pst files


The next process is to choose the saving location of your Thunderbird files. Select the path to save and then choose file naming option. Click on the Ok button to begin the conversion process.Thunderbird Converter Pro Licence Saving Options


The conversion process will start and when the process is completed a new message box would launch, showing the message of successful conversion.Thunderbird Converter Pro Licence Options

Other Thunderbird issues we Handled

  • Thunderbird email problems
  • What are recommended third party anti-virus software solutions?
  • Problems sending email from Thunderbird
  • Application not responding
  • Thunderbird Outgoing Email Problems

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How to fix Mozilla Thunderbird issues on Windows 10 Call @ 1-855-785-2511

How to fix Mozilla Thunderbird issues on Windows 10

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In our webmail vs desktop email client article, we mentioned that using desktop email clients has its benefits. Speaking of desktop email clients, one of the most popular email clients for Windows 10 is Thunderbird, but according to users, Thunderbird has its share of issues on Windows 10, and today we’re going to address some of these issues like Thunderbird won’t open links or more.

Thunderbird issues on Windows 10

Solution 1 – Update Thunderbird

Quite often issues with Thunderbird on Windows 10 can occur due to out dated version of Thunderbird. In order to fix most Thunderbird issues, it’s always good to use the latest version of Thunderbird on Windows 10 in order to avoid any potential incompatibility issues.

Solution 2 – Run Thunderbird from Safe Mode

According to users, Thunderbird hangs on their Windows 10 PC while trying to perform a certain action, and this can be caused by any third-party application. In order to fix this issue, some users are suggesting to start Thunderbird from Safe Mode. To do that follow these steps:

Before addressing any computer issue, we always recommend scanning and repairing any underlying problems affecting your PC health and performance.

Downloading drivers manually can be a long and tedious process, therefore, in order to ensure your computer is running error-free and using the latest drivers, you can use tools such as DriverAgent Plus to download quickly all the necessary drivers.

To use DriverAgent Plus follow these simple steps:

  1. Download DriverAgent Plus (100% safe download and endorsed by us).
  2. Once the download is complete start the DriverAgent Plus.
  3. Click the Start Scan button and let DriverAgent Plus download all the necessary drivers.

Outdated drivers can often cause crashes, file loss and even permanent damage to your computer. To ensure that your computer is stable, make sure to regularly check for driver updates with DriverAgent Plus.

  1. Click the Start button.
  2. Now click the Power button, press and hold Shift on your keyboard and choose Restart from the menu.
  3. Once your computer restarts, you should see Advanced boot screen. ChooseTroubleshoot > Advanced Options > Startup Settings and click the restart button.
  4. When your computer restarts again, press F5 to choose Safe Mode with Networking.
  5. After entering the Safe Mode start Thunderbird. If Thunderbird is working normally in Safe Mode, the issue is most likely caused by a third-party application that is installed on your PC, and in order to fix Thunderbird, you’ll need to find the problematic application on your PC and disable/uninstall it.
  • READ ALSO: Fix: Mozilla Firefox Memory Leaking Problem in Windows

READ THIS ALSO: Mozilla  Thunderbird For Windows 10

AutoCAD 360 is now a Universal Windows 10 app

Solution 3 – Disable Thunderbird add-ons

Sometimes issues with Thunderbird can be caused by third-party add-ons that you have installed. The easiest way to check if the certain add-on is causing issues with Thunderbird is to start Thunderbird Safe Mode. To do that, do the following:

  1. Press and hold Shift on your keyboard and run Thunderbird.
  2. You should see Thunderbird Safe Mode window. Check Disable all add-on sand click Continue in Safe Mode.
  3. Optional: If the previous method isn’t working for you, you can always enter Safe Mode by starting Thunderbird normally and clicking the Menu icon in the top right and choosing Help >Restart with Add-ons Disabled.

If you have resolved Thunderbird issues by entering the Safe Mode, then your issue is most likely caused by a Thunderbird extensions, and in order to fix the issue, you’ll have to disable/remove problematic extensions. To do that, follow these steps:

  1. Start Thunderbird.
  2. Click Menu button in the top right corner and choose Add-ons.
  3. Now select Extensions tab on the left.
  4. You should see a list of available extensions. Click Disable next to each extension in order to disable it.
  5. Now enable extensions one by one until you find the one that is causing you problems.

Quick solution to fix Thunderbird issues in Windows 10

  • Step 1: Download this PC Scan & Repair tool
  • Step 2: Click “Start Scan” to find Windows issues that could be causing errors with Thunderbird in Windows 10
  • Step 3: Click “Start Repair” to fix all issues.

Solution 4 – Disable your antivirus

As we previously mentioned, issues with Thunderbird can be caused by your antivirus software, most commonly Avira, Avast, and Norton. If you’re using any of these tools, we suggest that you try disabling them to see if that solves the issue. If disabling your antivirus doesn’t solve the issue, you might have to uninstall your antivirus completely and switch to a different one. We already wrote about the best antivirus software for Windows 10, so if you’re looking for a new security software, make sure you check it out.

Solution 5 – Run Thunderbird in compatibility mode

In order to fix issues with Thunderbird, sometimes it’s best that you run it in compatibility mode. To do that, follow these steps:

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  1. Download ReimagePlus (100% safe download and endorsed by us).
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues.
Tip: Hide Search & Task View Buttons From the Taskbar in Windows 10

In order to quickly fix the issue like the one which brought you here and prevents other ones from happening, we advise you to download ReimagePlus now! Thus, not only will you have an error-free PC, but it will also be as fast as when you first bought it.

  1. Find Thunderbird’s shortcut and right click it. Choose Properties from the menu.
  2. Navigate to Compatibility tab and check Run this program in compatibility mode for.
  3. Select one of the older versions of Windows from the list, for example, Windows 7 or Windows XP.
  4. Click Apply and OK to save changes.

Solution 6 – Run CCleaner

Users reported that they have successfully fixed the issues with Thunderbird on Windows 10 after running CCleaner. Bear in mind that CCleaner can sometimes remove important files from your PC, so use it carefully.

Thunderbird issues on Windows 10 are most often caused by a third-party application or by a Thunderbird extension, and you can easily fix most of Thunderbird issues by following our solutions. We also did a comparison between Thunderbird and OE Classic, so if you can’t fix problems with Thunderbird, you might want to switch to OE Classic.

  • READ ALSO: This is how you’ll port your Chrome extensions to Edge
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Thunderbird email problems ; Call support @ 1-855-785-2511

Thunderbird email problems

Call support @ 1-855-785-2511

I have been using Nis 2011 since it was in beta and have been using Thunderbird 3.1 beta the whole time. Just starting today NIS has started to stop all incoming and outgoing email through thunderbird. I can get my email through web mail but it is just to slow and I like using Tunderbird. I am using win 7 ultimate with NIS 2011 and Thunderbird 3.1. If anyone has an answer please let me know.

Re: Thunderbird email problems

fjevader wrote:
I have been using Nis 2011 since it was in beta and have been using Thunderbird 3.1 beta the whole time. Just starting today NIS has started to stop all incoming and outgoing email through thunderbird.

What are the indications that NIS is actively blocking your email program?  What notifications and alerts are you seeing and what do they say?


Re: Thunderbird email problems

When I turn off the email protection like this:


Re: Thunderbird email problems


Thanks for the screenshot, but it does not tell us what you are actually seeing when mail delivery fails.  If you can be more specific about what happens when you try to send or receive mail it might help to define the issue.


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Re: Thunderbird email problems

When I click on the get mail button Thunderbird tells me that the connection has been refused from Road runner. Than once I turn off the email protection in NIS I will be able to receive and send email. This is all it tells me. I have already been to Road Runner and Mozilla and both say it is with Nortons and not them.  I have been over and over all the config stuff with both of them. Not too sure what else I can tell you at this time. And before you ask it is not Windows either. I have also updated every thing and ran two full systems scans and One system restore. Nothing works except to turn off NIS which is kind of stupid because that was one of the reasons I bought NIS to start with. Thanks just the same.


Re: Thunderbird email problems

Hi fjevader,

This may be an issue with the ports that are being used.  Please go to Account Settings in Thunderbird and let us know what ports are shown for Server Settings (POP Mail Server) and also for Outgoing Server (SMTP).  Have you gotten any notification from Road Runner about them blocking port 25?  Is this problem something new that just started happening out of the blue?

Norton can only scan ports 110 and port 25.  If you are required to use other ports, you will need to disable Norton Email Scanning.  Doing so would not pose any security risk, as all incoming attachments are scanned by Auto-Protect when they are opened, and outgoing message scanning is for the benefit of your recipients only.  Email scanning is an added layer of functionality that is carried over from earlier times – it is no longer an essential feature and you will be no less safe if you need to disable it.


Re: Thunderbird email problems

Thunderbird is using ports 110 and 25. I can’t believe you said that about the email scanning. If it’s not needed why do you keep it than? Thanks for all of your help.


Re: Thunderbird email problems

fjevader wrote:
I can’t believe you said that about the email scanning. If it’s not needed why do you keep it than?

It’s a carry-over from the past.  It’s useful sometimes, but no longer essential.  Norton email scanning should work fine with those ports, so something else must be going on.  What is the full version number of Thunderbird you are using?  You said 3.1 Beta.  I hope that was a typo, as the full release version has been available for quite some time and is now at version 3.1.6.If you are using the Beta release, you should uninstall it completely and install 3.1.6.


Re: Thunderbird email problems

It is the 3.1.6 Version and not the beta. The only thing I have not tried yet is to reinstall NIS. Will work on that later when I have the time. Thanks.


Re: Thunderbird email problems

Have you gone in to program control and made sure to add Thunderbird as allowed.  The .exe that was allowed before may not be valid any more.  I don’t know what else would have changed.  NIS2011 and Thunderbird with 3.1.6 work together without issue on my machine.  I have email scanning on and antispam turned off.

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Thunderbird Outgoing Email Problems, Call support @ 1-855-785-2511

Thunderbird Outgoing Email Problems – SMTP Configuration Scenarios

It is clear that several people are having problems with an outgoing email with Mozilla’s Thunderbird. Most outgoing e-mail problems are related to improper SMTP (Simple Mail Transport Protocol) configurations. Sometimes an ISP’s server configuration changes. Sometimes the user may not select the proper SMTP server for an account. In this post, I will attempt to cover some of the most common configurations that I find in the hope that one of them will work properly with your particular email server or ISP (Internet Service Provider).

The first part of this article begins with the post Outgoing Email Problems with Thunderbird. You might want to check that out for some background information.

I will start with some of the common SMTP configurations that I see. If you use a major ISP and your configuration is different, please post the name of your ISP and the configuration details in the comment section. Also, if you know of a publicly accessible page where the ISP offers configuration information, please post that as well.

Let’s get started.

First, the Thunderbird configuration section for SMTP server settings can be found at:

  1. Select Account Settings from the Tools menu.
  2. Scroll down to the bottom of the list if e-mail accounts.
  3. Select Outgoing Server (SMTP).


The section that you want is at the top of the right-hand side.


Highlight an SMTP account and click the Edit button, or if you want to add a new account click the Add button. The SMTP Server dialog box will pop up.

The Description is not important, but if you configure multiple SMTP accounts it would be a good idea to enter a description. The Server Name and the User Name are the two important areas to focus on. You will need to get this information from your hosting company or ISP. The account name is usually just the primary account name from your ISP. That is the name to the left of the @ in your primary e-mail address. With some ISPs it is important to use the primary account name and not necessarily the account name for the individual e-mail address you are using.

You do not need to set up separate SMTP accounts for each e-mail address if you have multiple e-mail accounts set up with the ISP. In fact, most ISPs allow you to run all of your outgoing e-mail through their SMTP servers, so if you find that one SMTP server works well, try selecting it for each of your e-mail accounts.

Typical AT&T SMTP Configuration in Thunderbird


  • Enter the SMTP Server Name. There are many variations of this, depending upon which AT&T e-mail service you are using. You will need to get the correct server name from your AT&T service provider.
  • Make sure that “Use name and password” is checked.
  • Use the full e-mail address for the primary account.
  • AT&T e-mail uses a secure connection. Click on the SSL radio button. The Port will change to 465 when you click the radio button.

AT&T Support Info: How to verify At&T email Settings.

Typical SMTP Configuration in Thunderbird


  • Enter the SMTP Server Name. Cox uses different SMTP servers for different geographic regions in the USA. Get the proper SMTP server name by contacting Cox.
  • Make sure that “Use name and password” is checked.
  • Use the account name for the primary account. Thunderbird will prompt you for the password the first time you send e-mail.
  • Cox does not use a secure connection. Leave the No radio button selected.

Typical GMail SMTP Configuration in Thunderbird


  • Enter the Gmail SMTP Server Name.
  • Make sure that “Use name and password” is checked.
  • Enter your account name. If the e-mail address is, the account name is my account name. Thunderbird will prompt you for the password the first time you send e-mail.
  • Gmail uses an encrypted connection. Make sure that the SSL radio button is selected.

A Very Important Final Step


Do not forget that if you set up an additional SMTP server configuration, you must select it in the Account Settings for each e-mail account you want to run through that server. Right-click on an account name and select properties to view the Account Settings. You may also have to clear the password assigned to an account when you switch SMTP servers. Follow the instructions in changing Thunderbird passwords to do so.

I found a page in the page in the Mozilla’s Thunderbird support section that includes links to set up pages with several popular ISPs. You might want to take a look at Creating accounts in Thunderbird for popular email providers to see if they have the configuration information that you need.

Some Additional Notes

  • Always get the proper outgoing email configuration information from your hosting company or ISP.
  • Don’t rule out the possibility that your PC might be causing the problem. Try temporarily disabling your virus software and firewall to see if either of these systems is blocking outgoing e-mail.
  • If possible, set up multiple SMTP configurations so that if one fails, you can switch to another. I run most of my mail through my Cox SMTP server because I have found it to be more reliable than AT&T. However, both accounts have gone down periodically. Mail servers run into problems just like any other server. Sometimes the customer service people that you call are completely unaware of any issues with server downtime.
  • If you are using a Yahoo account for e-mail, be aware that Yahoo changed their system configuration a while ago. See the following page for more information: Yahoo Outgoing E-mail Problems with Thunderbird.

Additional and related post

Problem with email after Thunderbird Upgrade ; support @ 1-855-785-2511

Problem with email after Thunderbird Upgrade

Problem with email after Thunderbird Upgrade

On 6/21/11, there was a Thunderbird upgrade to version 3.1.11.  Since this upgrade, Thunderbird will not download messages from the Yahoo! mail server.  Has anyone experienced this and possibly found a solution?  No problems prior to the upgrade.  Now it says Connected to, but never downloads and there are no error messages.  I know this isn’t “officially” supported, but I am sure there are others that use Thunderbird.  Thanks.

2 replies


Maybe this has something to do with it.

Known Issues

This list covers some of the known problems with Thunderbird 3.1. Please read this before reporting any new bugs.

All Systems

Your passwords are stored in a new location. If you go back to using Thunderbird 2 or switch back and forth between Thunderbird 3.1 and Thunderbird 2, your password lists do not get updated.

I use the same version of Thunderbird, and when I switched to AT&T Uverse, it took me a week to get my EMAIL working.  I never did get any help from AT&T, I had to figure it out myself.

I think My problem was server settings, but I did delete all my passwords and start over again.

My server settings are incoming server port 110. Outgoing SMTP server port 25 connection security, none.

2 of 3 (290 views)
Jun 25, 2011 12:10:39 PM


I had the same problem with Thunderbird suddenly not working. I found the problem in the McAfee software. McAfee recently updated about the same time Thunderbird updated. For some reason, the McAfee firewall blocks Thunderbird from accessing the internet in the upgrade. Go to the firewall settings tab in the McAfee Security Center. Then go to the Program permissions tab. Look down the list and find the Thunderbird program. Highlight Thunderbird and click the edit tab. Change access from Blocked to Full. When I did this my Thunderbird worked fine.

Additional issue with Thunderbird