Thunderbird Community Forum

This is simple. Getting here is not. The issue is the zoom feature which many years ago I could not find. Now it is available and that is great, except: The CTRL + and CTRL - do not work until you first use the function in the menu. Once I use it in the menu I can use the key stroke several times to get it where I can read it. Every time though I have to go to the View function in the menu first. Simple fix.

Randy

Trying to set up a mailing list for emails. Not sure how to set up a group that I can use to list names and emails. Went to help. Instructions said to > open address book > select file > new > mailing list. I went to address book ok but cannot find 'File' there.

Am after assistance in getting mailing list set up.

Thanks

Windows 11 Sending, but not receiving e-mails in two OAuth addresses (one university account, one personalised domain gmail) Can't find 'Incoming Server Settings' to check if they are correct Have selected "manual configuration flow" and restarted Thunderbird

Hi, I just installed Thunderbird on a new computer and was super happy about how easy the setup has become for multiple e-mail addresses - however, I have two addresses where I can send, but not recieve e-mails. One is a university e-mail and one a personalised domain gmail - I used both without trouble in Thunderbird on my previous computer. They are both OAuth and the Outgoing Server Settings are correct, but I cannot find where to adjust Incoming Server settings. I've selected "manual configuration flow" and restarted Thunderbird, but still can't see anything new. Where do I find Incoming Server settings now? Thank you for your help,

Lena

Hi - Thunderbird has not fetched any emails from the past two days. I am running 153.1.0esr (64-bit) on Windows 10. If I remember correctly, I downloaded that version four days ago. I vaguely recall getting some message somehow that I needed the ESR. (Sorry I don't have a very good memory!) Thunderbird did fetch emails for two days after that...but I suppose it's possible that I didn't restart Tbird right away, so maybe it was still using an older version until two days ago?? My ISP is RCN/Astound. Last week, I changed my password on both the RCN webmail and on Thunderbird, and I could send and receive after that. Tonight, when I discovered that Thunderbird wasn't fetching, I also tried to send an email, but I initially received an error message. It was something like "Your message was unable to be saved" and then there was something about saving it as a draft. I've seen that message many times over the years, but I don't remember exactly what it said. Thinking it might be a password requirements issue, I changed my password again. I don't know if that mattered, but I am now able to send emails -- but I still can't fetch them. I turned off my Windows firewall and Windows real-time threat protection. That didn't help. I saw this thread https://support.mozilla.org/en-US/questions/1531863 tonight and set "network.dns.disableIPv6" to "true." That didn't help either. I would appreciate any assistance you can provide. Though I am not a expert, I am happy to provide more info if needed. Thank you in advance for your help.

I wanted to share a specific startup freeze loop I encountered today.

I had a moderate number of tabs open in Thunderbird when I quit the app. I had set up a single IMAP message filter yesterday to automatically move incoming automated text alerts into their own folder (causing about 50–60 small emails arriving in quick succession this morning at startup).

The Problem: Upon starting up, the app almost immediately choked and became unresponsive. Unlike the freeze report by another user here on August 21st.

My Workaround: After a few attempts to open Thunderbird I managed to break the freeze loop by instantly closing the single open UI window right at startup. This kept T-bird running invisibly in the macOS background. It seemed that without the need of rendering the UI, the background engine successfully completed all the IMAP syncing and filtering tasks.

When I brought Thunderbird back to the foreground, all my open tabs instantly "snapped", and the app has been perfectly stable since. I haven't tried to replicate this due to the fear of breaking the current stability.

Has anyone else recently noticed Thunderbird freezing under similar conditions lately? Let us know if this workaround helps you get past your startup freezes too!

I believe with Update 154,0 my thunderbird has been freezing up. I can't see, to compress files or select some folders. After a few minutes everything freezes up. 21 AUGUST 2026

[redacted] @gmail.com

/edit: unlocked as other was made as duplicate.

Dell Desktop - Windows 10 to Lenovo Laptop Windows 11 I followed the Alternative Manual Transfer between Windows 10/11 Roaming Profile and Local Profile Now on Lenova - Mozilla will not open - Profile Missing - Your Thunderbird profile cannot be loaded. It may be missing or inaccessible. I do not know how to uninstall it or how to start over.

Hello,

My internet provider is RCN. For the past couple of months, I’ve occasionally been getting the message, “Connection to server imap.rcn.com timed out.” As a result, I’m unable to receive emails via Thunderbird.

All my settings are correct. Usually, the problem resolves itself within 24 hours, but sometimes, like this time, it lasts longer.

Any suggestions? Best, Magda

I am trying to add an email address to Thunderbird on my laptop and I keep getting an authentication error when I enter the password. All the same information has been used for the same email address on my phone and works fine.

Can't sign in or change password. can't get mail or send. I have email through Yahoo. (Comcast.com) The below message pops up all the time.

Login to server imap.mail.yahoo.com with username xxxxers@comcast.net failed.

my email [redacted]@comcast.net

I have had a problem the last few months with my power/sleep settings in Windows being reset to "Never" and it appears to happen when I get Thunderbird updates. Have I done something incorrectly?

Dear Sirs,

I want to configure my email ID sundar@srikrishnalogistics.com (provided by rediffmailpro.com) in Thunderbird.

I have already tried configuring the account.

• • • • • • • • • • • email from support@rediffenterprisepro.com

To configure a Rediffmail Pro email account in Thunderbird using IMAP, use the following settings:

1. Open Thunderbird Go to Account Settings >> Account Actions >> Add Mail Account. Enter: Your Name: User's name Email Address: sundar@srikrishnalogistics.com Password: Email account password Click Configure manually.

2. Enter IMAP settings Incoming Server (IMAP) Server: imap.rediffmailpro.com Port: 993 Connection Security: SSL/TLS Authentication Method: Normal Password Username: Full email address

Outgoing Server (SMTP) Server: smtp.rediffmailpro.com Port: 587 Connection Security: STARTTLS Authentication Method: Normal Password Username: Full email address Then click Re-test → Done.

3. Verify synchronization After configuration, Thunderbird should synchronize the mailbox folders with the Rediffmail Pro server.

Important: If the user wants all emails to remain on the server, ensure the account is configured as IMAP, not POP.

Since all the folders are visible but only a few emails are appearing in Inbox, Sent Items, and other folders, kindly check the following:

   Open Thunderbird >> Account Settings >> Server Settings and confirm that the account is configured as IMAP.
   Right-click the email account in Thunderbird and select Subscribe.
   Ensure that all required folders are selected/subscribed.
   Right-click the account and select Get Messages to initiate synchronization.
   Please allow some time for Thunderbird to complete the synchronization, especially if the mailbox contains a large number of emails.

• • • • • • • • • • • • even after doing the above problem exists

i have done the above but still problem is there. All the folders are appearing in Thunderbird, but most folders contain very few emails or no emails at all, whereas there are many more emails available in the webmail.

Kindly guide me in configuring Thunderbird properly so that all my emails and folders are synchronized correctly.

Regards, Sundar Ram