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I am unable to send emails, receiving them is fine.

For about a week now I have been unable to send emails. Receiving them is fine. 1 had just said yes to the latest update. When I try to send I get this message - Sendi… (read more)

For about a week now I have been unable to send emails. Receiving them is fine. 1 had just said yes to the latest update. When I try to send I get this message - Sending of the message failed. An error occurred while sending mail. The mail server responded: Service unavailable; Client host [125.214.85.178] blocked using b.barracudacentral.org; http://www.barracudanetworks.com/reputation/?pr=1&ip=125.214.85.178. Please check the message recipient "reply-fe9515767360017975-18_HTML-75443594-7238404-12125@emails.avg.com" and try again.

I am 71, not technologically minded but am rather frustrated by this.

I hope you can help me out.

Thank you

Rita

Open 1

Thunderbird will not download yahoo emails

Hello, Everything working just fine last night. Wake up and Thunderbird will not retrieve emails. Remembered this old message I got so I went through and deleted my seco… (read more)

Hello,

Everything working just fine last night. Wake up and Thunderbird will not retrieve emails.

Remembered this old message I got so I went through and deleted my second email address, didn't help.

https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo

Checked all settings compared to Yahoo, still won't download messages. I can even send a message with my current settings no problem, and it does login, just won't retrieve emails. Gives me a connection timeout.

Anyone have any ideas?

Open 13 2 89

Not receive emails, can only send. When starting Thunderbird "the current operation on Inbox <my email address> did not succeed"

I cant receive emails only send them. I receive an error message when starting Thunderbird "the current operation on inbox <my email address> did not succeed" … (read more)

I cant receive emails only send them. I receive an error message when starting Thunderbird "the current operation on inbox <my email address> did not succeed"

Open 3 1 200

Cannot send send e-mails

Trying to send e-mails and get the following message:- Sending of the message failed. An error occurred while sending mail. The server responded: <X@totalise.co.uk>… (read more)

Trying to send e-mails and get the following message:-

Sending of the message failed. An error occurred while sending mail. The server responded: <X@totalise.co.uk>recipiant rejected - relay denied. Please check the message recipient"rod.coleman@totalise.co.uk" and try again.

This happens with all e-mails.

(PII redacted by moderator)

Open 1

IMAP, SMTP и POP3

Добрый день. пришло вот такое письмо от Яндекса. что можно сделать чтобы продолжить работать в программе Thunderbird ?*?? помогите пожалуйста Для организаций работа с Я… (read more)

Добрый день. пришло вот такое письмо от Яндекса.

что можно сделать чтобы продолжить работать в программе Thunderbird ?*?? помогите пожалуйста

Для организаций работа с Яндекс Почтой по протоколам IMAP, SMTP и POP3 будет доступна только с тарифом Яндекс 360 с 13 июля У вашей организации нет подключённого тарифа. Поэтому с почтой не получится работать в Microsoft Outlook, Mozilla Thunderbird и других программах. Вы по‑прежнему сможете использовать веб-версию и приложение. Личная почта продолжит работать без изменений. Новые условия будут действовать только для аккаунтов в организациях. Обратитесь к администратору, чтобы подключить тариф Яндекс 360 и сохранить доступ к почте по протоколам. Чтобы продолжить обеспечивать стабильную и качественную работу сервиса, поддержка сторонних почтовых клиентов теперь входит в тарифы Яндекс 360. Подробнее в Справке. Условия использования Сервисы Яндекс 360

Open 3 1

Cannot send emails with Thunderbird

Hi David This is the last attempt I did but it failed. Enclosed is the screen shot you have asked for. Keep in mind my WIN 10 has 64 Bit but the last update from Thunde… (read more)

Hi David This is the last attempt I did but it failed. Enclosed is the screen shot you have asked for. Keep in mind my WIN 10 has 64 Bit but the last update from Thunderbird was 32 Bit

Heinz

Open 3

Unable to write the email to the mailbox.

Full errror: Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox. Operatin… (read more)

Full errror: Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox.

Operating system Windows 10. I have Thunderbird installed on three computers. Two on Windows 10 and one on Windows 11. I have two accounts Helen and Kevin. I have no problems with my Kevin account on the there computers. The error only occures with my Helen account and only on the Windows 10 computers. Not the Windows 11 computer. Can you fix this?

Open 1 30

option "send to an email addres"

since 2 years, the option "send to an email addres" isn't fonctionning, connected to this problem, is de "resize" operation that desappeared. It was so practical, fast an… (read more)

since 2 years, the option "send to an email addres" isn't fonctionning, connected to this problem, is de "resize" operation that desappeared. It was so practical, fast and relaible method to proceed.

Open 2 20

where is read receipts located?

Assistance with Read Receipt and Delivery Status Notification Good afternoon, Thank you for taking the time to read my email. I have been trying to determine why I do not… (read more)

Assistance with Read Receipt and Delivery Status Notification

Good afternoon,

Thank you for taking the time to read my email.

I have been trying to determine why I do not receive read receipts after selecting Return Receipt and Delivery Status Notification under the Options tab when sending emails. This has been an ongoing issue for more than 10 years.

I am currently using Thunderbird version 152.0 on one computer and 140.10.2 ESR (32-bit) on another. Despite trying numerous settings and troubleshooting steps over the years, I have never been able to receive a read receipt.

I would be truly grateful if you could guide me in the right direction or let me know if there is a setting I may have overlooked. If there are any troubleshooting steps or additional information you need from me, I would be happy to provide it.

Thank you very much for your time and assistance. I sincerely appreciate your help.

Kind regards,

Brenda

Open 3

I have Read Receipts disabled, but one was generated when MY address is in Disposition-Notification-To

I received a spam message this morning that had a "Disposition-Notification-To" (aka Read Receipt) line that had MY email address on it. I honestly don't know why a spamm… (read more)

I received a spam message this morning that had a "Disposition-Notification-To" (aka Read Receipt) line that had MY email address on it. I honestly don't know why a spammer would do this - but that's not the issue. I have Read Receipts disabled, but Thunderbird generated an email (to me) and sent it to my mail host. This seems like a bug. Even if the Read Receipt has my email address on it (making it mostly harmless), Thunderbird shouldn't have generated the message. Or am I missing something? Thanks.

Open 11 80

cannot send emails on primary address, secondary emails work fine, new computer, smtp is comcast

new computer. Downloaded thunderbird. Added old email accounts. I have 4. I cannot send emails out with primary account. I can get secondary emails to send out. SMtp is c… (read more)

new computer. Downloaded thunderbird. Added old email accounts. I have 4. I cannot send emails out with primary account. I can get secondary emails to send out. SMtp is comcast.

Open 4 20

Création d'un compte

Je n'arrive pas à transférer les messages d'une de mes boites mail orange. je suis arrivée à créer le compte, à rentrer le mot de passe, etc. mais il y a probablement un … (read more)

Je n'arrive pas à transférer les messages d'une de mes boites mail orange. je suis arrivée à créer le compte, à rentrer le mot de passe, etc. mais il y a probablement un élément qui fait que je ne peux ni adresser les mails ni en recevoir.

je ne comprends pas les "pop", "imap"...

Ce qui est bizarre, c'est que le même jour j'ai créé un autre compte orange et tout va bien. J'ai entré les mêmes éléments, sauf bien entendu un mot de passe différent.

J'ai besoin d'une aide car l'adresse en question est mon adresse principale chez Orange.

Merci

Open 2

Issue with recieving any emails

Today is June 22nd 2026 , I was busy all weekend and I just checked my mail this morning , I noticed that the last email I got was Thursday June 18th 2026 , so I right c… (read more)

Today is June 22nd 2026 , I was busy all weekend and I just checked my mail this morning , I noticed that the last email I got was Thursday June 18th 2026 , so I right clicked and clicked on "Get Messages" , suddenly I have about 40 emails , dating from the 19th to today , I have complained before about having issues with emails being a day or so late and was told that is when they were sent .... I am calling BS on that response and repeating my claim that something is WRONG with Thunderbird and how (or IF) it recieves emails , because there is no way that ALL the emails I normally get all decided at once to wait to send them to me till today (and I only got them because I clicked on Get Messages , otherwise I most likely still wouldn't have recieved any emails for several days from the date they were supposed to show up)

I can't be the only one with this issue , so hopefully someone has looked into this and come up with a actual FIX , , I have had this email program since Windows stopped Windows 10 Mail and honestly , since its been out for years prior to that , I would think it wouldn't still be buggy as it is , there are lots of features that are just combersome to use (like mass deleting emails by Name) all the way to just actually getting emails on time when they were actually sent (I have literally been on the phone with someone and they send me a email , and I don't get it for hours or sometimes days or sometimes not at all , and they are from people I have recieved emails from before and are part of my address book , so I should get them within minutes at most , not days or never ...

I am about ready to go find something else that is relaiable (and looks better , as I can't even add one of my pictures as a Background , and Light/Dark mode sucks as far as looks goes unless you are some GOTH person or something) and actually user friendly (when I swtiched to this email program it was better than most of the others offered at the time , but honestly , it has never improved and has remained unfinished as far as I am concerned) , it says it "updates" all the time , but I have not noticed ANY improvements in Functionality or looks since I first downloaded it , and for as long as Thunderbird has been available , it should not still be in Beta form and actually function at least as well as Microsoft's outdated emails programs did , but as of this ongoing issue , it is still slow and clunky , it may or may not send you emails depending on the day , and is a pain to navigate things that should be easily accessible on the main page with a simple click , again I'm comparing it to Outlook Express which has been obsolete for years , and Windows 10 Mail because as old as they are , they functioned much better than this email ever has and look much better , at least they allowed personal pictures for a Background

If you don't have a actual FIX for this ongoing issue , then I think it's time for me to move on and find something that actually functions like a email program should , by actually being able to recieve emails faster than Pony Express , which was last used because it was too slow over 165 years ago

If you DO have a FIX for this ongoing issue of not recieving emails when they were actually sent (I complained about this exact issue back in January) , not days later , or being able to close Thunderbird and still get emails alerts (you know like Microsoft has for years , and as much as I dislike Microsoft and their policies and FORCED Feature Windows Updates that screw up everything , at least they had a decent and functional email program since Windows 95 through Windows 10 Mail , but all they offer now is Outlook and I don't do online emails , I want it on my Desktop , which is why I went to Thunderbird in the first place) , maybe since they discontinued theirs , you could just copy/paste everything from it and call it Thunderbird

At least then it would work like it should , and look better , and actually not have to just minimize it in the taskbar so you will know at some point that you got a email , or to make it automatically start when Windows does , so I don't have to manually open it every time I restart my PC , since I have yet to find a setting for that , or if it is there its most likely hidden behind 40 other things you need to open to get to it , even though most likely the email alert sound never happens , maybe 2 times a month if I'm lucky , and even if it is several days late , (like I said 40 different people/companies didn't suddenly decide to wait 3 or more days to all send their emails at once , and only after I clicked Get Messages , oh , by the way , they are EMAILS NOT MESSAGES , a Message is a Text or Chat , a Email is a Email , maybe that is the issue , it doesn't know what its looking for)

As mentioned this has been a ongoing issue that I have complained about before , with no solution , and that no one here seems to want to address or actually FIX or even let me know they are working on a solution (which it seems like no one is) , so I'm tired of complaining to deaf ears , Helen Keller would have figured out what is wrong by now and she is Deaf , Blind and Dead ... When I am expecting a email from a Doctor that has info on a test or something , I need it when they send it , not days later or never .... I keep missing important emails because this program is and has been iffy at best since I have had it ...

I understand that the majority of the Staff for Thunderbird is Volunteers , but it just seems like no one cares what users experience and just brush it off and forget about it , and that is the issue I am and have been feeling with Support .... Not trying to be a jerk , I'm just frustrated with the lack of concern with how this program has and still does function

Thanks ..... Jim

Open 3

New sorting folders i.e. Work, Home etc

Did I dream seeing an ad for a new system for sorting incoming emails to what I would call folders, but I think it had sections like Work, Home, Family etc.? Can't find … (read more)

Did I dream seeing an ad for a new system for sorting incoming emails to what I would call folders, but I think it had sections like Work, Home, Family etc.? Can't find anything on it. I would love to be able to park stuff in separate folders without me actually doing it!

Open 1 10

Unable to write the email to the mailbox

I've been using Thunderbird on Windows 10 since last year sometime. Currently I'm on version 151.0.1. I've 4 x mailboxes here and since yesterday, 3 of them show me an un… (read more)

I've been using Thunderbird on Windows 10 since last year sometime. Currently I'm on version 151.0.1.

I've 4 x mailboxes here and since yesterday, 3 of them show me an unusual message when checking for emails. I tried attaching a screenshot but although the screenshot uploaded, I couldn't find a way to insert it here. But the message says Unable to write the email to the mailbox and asks me to check if I've write privileges (which I have) and to cheek the available disk space.(currently 101GB free).

The message is happening 2 or 3 times each day and lasts for about half an hour, then everything works fine again. Has anyone else seen this??

Open 10 40

forwarding not working

I just started using Thunderbird about a month ago having switched from Gmail. I've tried to forward a few emails to my personal gmail account but they are not going thr… (read more)

I just started using Thunderbird about a month ago having switched from Gmail. I've tried to forward a few emails to my personal gmail account but they are not going through. Any suggestions.

Open 1 30

Can I Mass Delete emails by Message Filter ? or any way to Delete several of the same sender emails

I have about 19,000 + emails in one of my email accounts , I do not want to delete all of them , just select groups , like for example I have about 392 emails from Ne… (read more)

I have about 19,000 + emails in one of my email accounts , I do not want to delete all of them , just select groups , like for example I have about 392 emails from Newegg , what I want to do is get all of them in 1 place (I did this using the Filter Emails) , then I want to delete them all , but I don't want to delete EVERY email I have stored

I tried but I couldn't find any way to do a mass delete , like a Select All , Delete , I couldn't even find Delete unless it was for each email , which would take forever to sort through 19,000+ emails and delete the ones I want deleted , but leaving the rest

Is there any way to do this ?? , or is there a reason this has not been implimented ?? , it seems like a no brainer , basically my email is running slow , so when I click delete on a email , there is a pause before it deletes , I am assuming because of the backlog of emails (already read) that I have in my Inbox that I didn't delete at the time , and now have literally thousands of them

Basically what I was hoping for is to be able to take say ALL Newegg emails , and put them together , then do a Select All and Delete , but I couldn't find any way to do this , that way I get rid of the ones that have expired , but keep other emails from other people/buisnesses and just do Selective Mass Deletion

Thanks ... Jim

Open 5 20