Spectrum has been blocked by Google,Microsoft, and Apple

I have been using Duck for email etc. Suddenly I can not send outbound emails. Contacted Spectrum and was informed that Microsoft, Google, and Apple have suspended coop… (ďalšie informácie)

I have been using Duck for email etc. Suddenly I can not send outbound emails. Contacted Spectrum and was informed that Microsoft, Google, and Apple have suspended cooperation with spectrum. Because of this situation, Duck can not send emails etc. What can Mozilla do to rectify this situation and when? Mozilla is a great product. Thank you Jeff Herriman

Open

Gmail Does Not Work - malformed. It should be retied - 09/07/2026

Please see attached image of the problem. I have tried looking on Google for ideas but have not found anything on this or how to fix. Hope someone can please help would … (ďalšie informácie)

Please see attached image of the problem.

I have tried looking on Google for ideas but have not found anything on this or how to fix. Hope someone can please help would be amazing!

Google -

400. That's an error

The server cannot process the request because it is malformed. It should be retied. That's all we know.

Solved 2

It was working fine and then it broke!

It was working fine on the new computer until yesterday. Now I get a pop-up box that says: ' Unable to connect The connection was refused when attempting to contact loca… (ďalšie informácie)

It was working fine on the new computer until yesterday. Now I get a pop-up box that says: ' Unable to connect The connection was refused when attempting to contact localhost.

The site could be temporarily unavailable or too busy. Try again in a few moments.

If you are unable to load any pages, check your computer's network connection. If your computer or network is protected by a firewall or proxy, make sure Thunderbird is permitted to access the web.

Open 6 10

Dynamic backup

is there any way to perform a dynamic backup of Thunderbird. By that I mean a regular (e.g. daily) backup of the profile or at least the mailboxes using a scheduler witho… (ďalšie informácie)

is there any way to perform a dynamic backup of Thunderbird. By that I mean a regular (e.g. daily) backup of the profile or at least the mailboxes using a scheduler without closing Thunderbird down?

Open

sending of the message failed. there was an error attaching file. please check that you have access to the file

I have an issue when trying to forward an email that contains an attachment. I receive the following error message: "Sending of the message failed. There was an error att… (ďalšie informácie)

I have an issue when trying to forward an email that contains an attachment. I receive the following error message:

"Sending of the message failed. There was an error attaching the file. Please check that you have access to the file."

I am using Thunderbird version 152 on Windows 10 Pro.

This issue only occurs when forwarding emails with attachments. Other email functions appear to work normally. Has anyone else encountered this issue? I would appreciate any help or suggestions. Thank you in advance.

Open 1

What happened to my 85 emails in my INBOX when applying the message filters on this file

Yesterday I downloaded 90 emails from my mail server. Only 5 of them were filtered correctly. Upon reviewing the remaining 85 emails, I observed that many of them "shou… (ďalšie informácie)

Yesterday I downloaded 90 emails from my mail server. Only 5 of them were filtered correctly.

Upon reviewing the remaining 85 emails, I observed that many of them "should" have been filtered. So I opened up the Tools - Message Filters and applied the filtering to the INBOX file.

Almost immediately, all 85 emails disappeared. They were not in the Trash folder, nor were they visible in any other folder or mail box that I could see.

It was recommended to apply the "repair" to the INBOX which I tried; However, all that happened was 318 older emails that I have processed a few days before reappeared in the INBOX. Which interestingly would not sort by the date indicated for the email; they would only sort by subject and sender.

It was further recommended to close TB, and delete the INBOX.msf file. Which I did do. In addition, I also restored the INBOX to the previous days file using my daily backup files. That file shows 101,076 kb of info contained in it.

I reopened TB to find once again nothing in the INBOX, and when I tried to re-run the get msgs aspect, the result was the system telling me there were no email messages to collect.

Yet I know the same 90 emails are still sitting in the mail server system.

Why did this happen?

Where did the 85 emails in the INBOX go to?

Why isn't the set of 2200++ email filters not automatically filtering all emails once they are collected, and distributing them to the appropriate email file folder / mail box?

What recommendations are available to help me resolve this situation and prevent it from happening again?

Also, I have a txt and html file of the 8 Jul 2026 filter report. Why can't I upload said files along with this set of information? Why are attachments only restricted to image files?

Thank

Open

I notice that TB partially displays some of my emails, leaving out critical portions

I am trying Thunderbird with the intention of replacing MS Outlook. So, I'm using it alongside Outlook. This is happening with my Yahoo.com account. FYI - Xfinity migr… (ďalšie informácie)

I am trying Thunderbird with the intention of replacing MS Outlook. So, I'm using it alongside Outlook. This is happening with my Yahoo.com account. FYI - Xfinity migrated my comcast.com account to mail.yahoo.com, which has caused a lot of problems, as well.

Open

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: <rod.coleman@totalise… (ďalšie informácie)

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

Sending of the message failed. An error occurred while sending mail. The server responded: <rod.coleman@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.

Open

Importing iPhone 8 contacts from Verizon account

I'm getting off a Verizon phone account and want to export my contacts before I do. I use an (old!) iPhone 8 so I can't export using their Verizon Cloud app because my op… (ďalšie informácie)

I'm getting off a Verizon phone account and want to export my contacts before I do. I use an (old!) iPhone 8 so I can't export using their Verizon Cloud app because my operating system is too old. Is there a way to import into Thunderbird using a USB cord? Or is there a recommended non-evil app that could allow me to do the same with my phone contacts?

Open 2

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… (ďalšie informácie)

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

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… (ďalšie informácie)

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

Since some weeks I receive e-mails as below with html text. Instead they should appear with pictures etc. What is going wrong and how/what of settings need to be changed in order to receive e-mails in a normal configuration?

> Mozilla Community Newsletter - Jun 2026 > > > Mozilla Community > ( https://clicks.mozilla.org/f/a/cDihyTJLBn2fv-I1Oo--6Q~~/AAQRxRA~/zgbdpFCB_AkKLZBZTmRe… (ďalšie informácie)

> Mozilla Community Newsletter - Jun 2026 > > > Mozilla Community > ( https://clicks.mozilla.org/f/a/cDihyTJLBn2fv-I1Oo--6Q~~/AAQRxRA~/zgbdpFCB_AkKLZBZTmReytDN8nG5bhg-5yYz-T8TcI1odP-WpwuayUwpRHmM1Czxm-9Hc7dcwQHwdb5BzeI_66ywiQIq7tyFkk9VBsCjsYFCFlf2T_RE8powhVA4ym1VXqZSPSRKB3D0RJl1iaOi-5YM_zHdrYw4XfvwOnLRSPiqTxT-xybfFWRHq4xFZIyJVLTaHs1moC21o30HeJ5SFW2O6XxPQirpup2CDXGOcNvGXV1lav1liddTdzqn3pDu ) > Welcome to another Firefox community roundup! > > This month, we’re taking a look at what’s next for Firefox. > From an upcoming visual refresh and a peek behind the new design > system to hidden features you may never have used before. We're > also highlighting a recent Reddit AMA on the new Firefox product > Roadmap and celebrating community contribution that’s making > collaboration in Pontoon even better. > > Let’s dive in! > > ************************************** > ✨ Firefox gets a fresh new look. Soon! > ************************************** > > Firefox is evolving with a refreshed design that makes the > browser feel more modern, approachable, and consistent across > desktop and mobile. The refresh also extends to Firefox’s voice > and writing style, making product experience feel more human, > direct, and unmistakably Firefox. If you’re excited about these > changes, make sure to keep an eye out for an upcoming foxfooding > opportunity later this month! 😉 > > Learn more > ( https://clicks.mozilla.org/f/a/o-cQ-iIaCVllpeje2eZpLg~~/AAQRxRA~/ZsMJiLMJAQ_uUieEfWqZxqX1MGtpIwPuQojOAk73vsstcO5kvXYzOYiZ-xLqF81oKEibU0tr1Vvw13SNfbQ7SAoxgZQP3stf0TSvvfT1oOGhGtGfgpSmjrNqMxI4H0VwJNfAfhFA5W92ApzOswCNHB3JpULt-PxlHEvYSA5m2DqBhTNjmw3deCyc6SS3Og58UnzT5ATd7suQkWB1lOJ5kwVkz0MNwzh-JC8_k_GqVZOZggsKuFyjVZJsKq7wMQoyRXRY1hm5K83l_ftQEB8NwyjCVjkkQp4_qxMybzRLLNdBvk9Pv4Eh9zxXL1VMePO7WNzUWL4xb-Rs1TcZJgCoww~~ ) > > > ************************** > 🦊 Firefox can do all this? > ************************** > > Sreenath from It's FOSS rounded up 21 Firefox features that > many users never discover. From the built-in Eyedropper tool and > Picture-in-Picture to vertical tabs and other productivity > features, there's plenty to explore. See how many you've already > used! We could even turn it into a fun bingo at our next > community event. > > Read more > ( https://clicks.mozilla.org/f/a/lrmqL7cc061SsMz-5_P5eg~~/AAQRxRA~/-WpjGoghmNAyAxh_Joy5Bf3QGdysN2iznH9COjDh10aJdAiiWx-972BrrXwsA08TnsJN4RIO1KMn6Jocso8SgjSo5pe6WMf78mo1jNf2b4DWE-bBUC34xkT3SkNrP4I0eTIUqr0ePDTlWR3OCKASthVkKBj5mf6ArVQnaALCN-qsnVPxR4kUTkD1Kb487jbeB3vqlrpuO09yE97y7u0Iqhoy0dMU-lNmlSAvJmx7NIN6UzG74zNxC-ZoltCvxpSbivD2F6Sn2Ixqi5Q7fQVXBB7qfFgcVvzXtkRo0lzcV90~ ) > > > *************************** > 💬 From the Reddit Community > *************************** > > Firefox leaders recently joinedr/firefox > ( https://clicks.mozilla.org/f/a/_9rxxdwWPIBAo2ISBB2ABQ~~/AAQRxRA~/8NSP8TEJYKaJQOH94ovHjBlU7dz5mGnHucixg3mZwUGrgK0mE9FWYX91EhtYFsw34iltulyra7uoBgv3wUHhmSX1h0OD89QN0HTYUA_uSbZUeARO3Bi02B4Jh-nkyaFg ) for a live AMA to answer > questions about the newly launched Firefox Product Roadmap. > Community members asked about everything from Android > improvements and Containers to Project Nova, PWAs, performance, > and future browser development. The conversation generated a wide > range of discussions and provided valuable insight into what > Firefox users are most excited, and concerned, about. > > Read the full AMA > ( https://clicks.mozilla.org/f/a/zk_FpBjqVHbWv93TlhsTFw~~/AAQRxRA~/zwK9AwfUIMkejXJOlC5lzEjBJwoBHphK4sUH5SufDO67kdjRMSzATA-ElVCOpexsmVJ4NJ_5M73Bbq9VKTJIFk7fi2yg76FpDNtbhC4Qgq8wuzfaIUhPv4aMMC_7iVMFPZL2yZ_mQt2wnNq1-ZwY1bzSI_CK7S5FTUZXRz8-IXi6natS8Ouggw87y-cn6Kdc9HZgw1UEfZPxb99fGnYs2Olg195ZpgGiJkTn-UBvRQBITshm1r4UsoEIpM21GHjwDASu1AHfMoWoyBRur5CB1WbF4GpjwHc2t4Uq9IuvTl5Tw-JOI1kv6t1hZl6i8gketpBhVZSTjhlurNAF15jykMVvj8Vx4z-KWYJoOemQqkg~ ) > > > ********************* > 👤 Community Spotlight > ********************* > > Collaboration in Pontoon just got a little easier. Thanks to > volunteer contributor Serah Nderi, users can now edit and delete > their own comments, while project managers can remove comments > for moderation purposes. This long-requested feature helps reduce > clutter, improve discussions, and makes collaboration smoother > for localization teams. > > Read more > ( https://clicks.mozilla.org/f/a/BS-2B3861DuET5-jKQp2bw~~/AAQRxRA~/CqXkFzn3xyfpm-eIkG_3osLGbxfVivEwRyh_icMmiL9Zl_0-ng-y8A_82Me5W4A_pQmWMNh5glImAF3GAo1PRt0zyfop02voiVjFdFW1c3xQnAM71G-uQHIL--LhGFkq70PsAQI8bjgDRV5NoK_t0sVxylyBEYT6cra5mU_qJlOc_XEffBGUU_ulrldSq3uTH8lhKsNoP31-hexVRzbWQbmjBWKbbMJaktPt9HtVz46icFKbeKpuR32tFK5hKFU7Z2aGp-DXCOrUBFXMhyOkdgyMf7umYPiNxCEwqUlerv1zPtyLYuKPWPy-BlwvkYc5Ro-MjU7KPNW8bQkhhW40XA~~ ) > > > Keep on rocking the free web, everyone! > > Community Teams at Mozilla > > YouTube ( https://clicks.mozilla.org/f/a/X3SHVH_xTh_rf52Vbcf-8w~~/AAQRxRA~/T6LI-c81uVgpymjlqFpZkPPMHFPKgHG5Go1ECxYnxd3LcSNJvotobrXxHWKFNDjssvHx5NtDZZIohMxoxm9CSYg1Zrz3Bnfte3N_ZUxNyEMzgo9ZM_MQmMYoVL0PSjmt ) Instagram > ( https://clicks.mozilla.org/f/a/qtXIWA2wqu5ges2F1gBY7A~~/AAQRxRA~/ut2ze1dSEViXApvbVcJqiQa6LlJWTaunEPOnkoZMas7kVS0Vt5fyuhf_o5dz3MsegSHXUdz_-qgveANkxeJH0jJrIJcrN4uPOsxjH6dfvb8dosrvKUWFodwNd1W8mMGn ) Twitter > ( https://clicks.mozilla.org/f/a/wGdsoZcNBidH3dKsCTm_Bg~~/AAQRxRA~/EAgKKuiaNdklwft6B1S4_zRs57NimmHsAFgR1Rkatl3fk39cUO9bUej8Zjg8ojZugUDCDbf5CYh8WGBUHIuNuqQjmr4KffLJByYJO5D1U8AVqmJ0sIgJhUN8yGaqb5gO ) You’re receiving this email > because we think you're neat, AND you subscribed to hear from us. > If our emails aren't sparking joy, we'll understand if you > unsubscribe > ( https://clicks.mozilla.org/f/a/ouDio7Oxk7A6W2Ni_TdqEA~~/AAQRxRA~/4r3Mh3wmQ0nW7h35bSbhYSs9vb99K4lBGvUCk9IZsu9-05t_BobWMuEWA733jcUuCa5AllU1x08zKHf8y0aCzLVoNFf8zuU2QYBLmk0m74uJAPjHf9-jKfd0nJWweDuY-RH6c6s_9dfIkKL2L7vj91KFg9d0yNW57C_mfvoclBXBOyTf_1mRlYNMw0RyMNfp ) > . > > You can also update your communication preferences > ( https://clicks.mozilla.org/f/a/ouDio7Oxk7A6W2Ni_TdqEA~~/AAQRxRA~/4r3Mh3wmQ0nW7h35bSbhYSs9vb99K4lBGvUCk9IZsu9-05t_BobWMuEWA733jcUuCa5AllU1x08zKHf8y0aCzLVoNFf8zuU2QYBLmk0m74uJAPjHf9-jKfd0nJWweDuY-RH6c6s_9dfIkKL2L7vj91KFg9d0yNW57C_mfvoclBXBOyTf_1mRlYNMw0RyMNfp ) > at any time. > > Mozilla logo ( https://clicks.mozilla.org/f/a/wAEgWYnqHsmpG0xJrVgUvw~~/AAQRxRA~/poFi7k_V-tewzvlxOuwlAbG1te-kYX8PqxdLE-Xwl3_oZtXYRNxsfyXKBJEmXshGt_RkoZA-ZDXdCbORVOLj9KxDbxKD1HwYLg3bolvj1LHsAanaaXNksbp3yTuJB_3d ) 149 New > Montgomery St, 4th Floor, San Francisco, California 94105 USA > > Legal ( https://clicks.mozilla.org/f/a/r-YRkQF4J_7o3fjvnWDePQ~~/AAQRxRA~/h57lIE0A-xHTDfdaf2jcYaEVYL_D9PqYkxh2ml3nbkTgWQE-uKnr4cp2z7ePxXOLm6qLGlTvJ0nx9TzJdkUCtNAZgyyIhS2SKtZ0mr0sg6m96INkUC7q9wOmfJDftklihA2Y07XBzcnmOjmyqrI6mQ~~ ) • > Privacy ( https://clicks.mozilla.org/f/a/BNNBiIbN8Rmkb2h6C7rNxw~~/AAQRxRA~/cQm94SVQS3Zy0hXyXbiSBGSqVeRPn7fmC-bPZiIjMRLUmkqAYunCa2Qwb3bcgF4pomzFBhPniAnml6xIVOO-xUfO6CYft85C2iHEp0lPq7ZWFVy6256ROrEo6hdZU_5c5qDcnaVAFZqV5H-51PUIYg~~ ) • Support > Mozilla Foundation > ( https://clicks.mozilla.org/f/a/biVg390cioOzT6o_YOUzFQ~~/AAQRxRA~/h57lIE0A-xHTDfdaf2jcYadBg7yi--ht_gTSv46knVgxJEAG-PlkFhmxtDzZY2IQemjNaGZ5FLztRdpAwl0pmTJLCwkuTEXDxEmJ8bRJ5FgKPPQ5pWHi-D-Lv8q9qlt6_LeT4K3-vHnkhdcf-VcZTg~~ )

Open

Just curious: what is the reason for the 154 version minimize to tray feature?

Hi, I was wondering the reason for the change in version 154 about changing the minimize to tray behaiviour when pressing the minimize button to minimizing when pressing … (ďalšie informácie)

Hi,

I was wondering the reason for the change in version 154 about changing the minimize to tray behaiviour when pressing the minimize button to minimizing when pressing the close button. Is there a standard? Why not make it a 2 way option, for users that prefer the older function?

Thanks.

Solved 1

After the last Thunderbird update I cannot send e-mails but still receive emails as usual. When sending I get a error message Must issue a STARTTLS command but all settings seems to be OK

Thunderbird Send message Error Sending of the message failed An error occurred while sending mail. The mail server responded: Must issue a STARTTLS command first. For mor… (ďalšie informácie)

Thunderbird Send message Error Sending of the message failed An error occurred while sending mail. The mail server responded: Must issue a STARTTLS command first. For more info, go to https://support.google.com/a/answer/3221692 and review RFC 3207 specifications. ffacd0b85a97d-47aa0f2186bsm33992962f8f.36 -gsmtp. Please verify that your email address is correct in your account settings and try again.

Note: I could not find the suggested specifications as indicated in the error message!

I did not change anything, the sending error occurred suddenly , all my settings IMAP Mail Server Port 993 SSL/TLS OAuth2 and SMTP Port 465 are still set to default. I changed also the SMTP to an new shown default 587 but non of this settings resolved the problem

Open 2

Can I use newtwork storage for Thunderbird message store reliabily?

Considering migrating from Outlook to Thunderbird (TB), as it is a logical potential path. Best I can tell from AI input is placing my message store on a network share (… (ďalšie informácie)

Considering migrating from Outlook to Thunderbird (TB), as it is a logical potential path. Best I can tell from AI input is placing my message store on a network share (colocated, stable network), would likely be unreliable. Said that TB storage format was basically fragile and subject to corruption if there was any kind of hiccup in the data transfer or if something happened during a power outage for example. Wanted to see how the real community felt about that and if it was indeed inadvisable to do so.

Open 5

Oauth challenge never appears

For a week or two I haven't been able to send any email from Thunderbird. I use smtp.gmail.com as my outgoing server, and have it configured using SSL/TLS on port 465 wi… (ďalšie informácie)

For a week or two I haven't been able to send any email from Thunderbird. I use smtp.gmail.com as my outgoing server, and have it configured using SSL/TLS on port 465 with Oauth2 authentication. I first saw this on an older TB version, but have now updated to Thunderbird 152.0.1 on MacOS Sequoia 15.7.7.

When I try to send email, a dialog pops up saying "Enter credentials" for my account, then "Verify it's you". When I click on Next it asks me to "Complete sign-in using your passkey". I believe at this point another window is supposed to pop up and I can use a fingerprint to enter the passkey, but that window never pops up. I have tried 3 different default browsers: Firefox (my usual one), Google Chrome, and Safari. All behave the same. Firefox might be suppressing Javascript, but the other two certainly aren't.

Is there some system security setting that might be preventing Thunderbird from opening a window in the default browser, or does Thunderbird maintain its own record of the browser? Any other suggestions on how to get the passkey challenge to appear?

Solved 5

Can't connect to one specific mail server in one specific network, other providers work.

Hello community, at my place of work no one can send or receive mail anmore using Thunderbird. The problem suddenly appeared last monday. No changes regarding the network… (ďalšie informácie)

Hello community,

at my place of work no one can send or receive mail anmore using Thunderbird. The problem suddenly appeared last monday. No changes regarding the network or settings in Thunderbird happened prior to this.

Here's what I tried so far and things I can rule out:

  • same problem appears on all devices (desktop and laptop PCs) in our office
  • our work mail server is online and working, I can access everything using the webmail-interface in the office network
  • new installation of Thunderbird without any profiles and fresh account confguration doesn't solve the problem
  • I can connect to our mail provider and send and receive mail when using my home network or my personal phone hotspot
  • I can connect to my private mail provider using Thunderbird while in the office network
  • troubleshooting mode doesn't solve the issue
  • renewing the internet connection on our router temporarily/once allowed some devices to receive mail
  • pinging the mail server (mailserver.[workdomain].de, no specific port) via command line was successful while Thunderbird was unable to connect to the mail accounts

IMAP-Log returns the following error codes:

  • D/IMAP URL failed with code 0x804b000e
  • D/IMAP URL failed with code 0x804b001e

I would be glad if somebody could help me out. If you need any more details I'll provide them. Thanks in advance!

Open