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Rarely fetches emails automatically at 15 minutes. I can fetch manually. This has been going on before the last update. I haven't changed any settings. Sometimes it fetches when I open the app. Other times I must fetch manually. Also, we should be able to fetch sooner than 15 minutes.

I have been using Mozilla Thunderbird for decades and they have even contributed a small amount of money to Thunderbird periodically. Just within the last two or three days all of a sudden I have been unable to send emails with my phone. I receive emails, but I do not send them.

So I opened up a laptop where I did not have Thunderbird and set it up properly through Spectrum using the incoming and outgoing servers as mail.twc.com. and yes, just like on my phone. I continue to receive new emails, but even with the laptop I was unable to send an email.

I received the message"send message error sending a message failed. The message could not be sent because the connection to outgoing server smtp mail.twc.com was lost in the middle of the transaction. Try again."

I contacted Spectrum twice and both times they had me try to send a message through their Web server spectrum.net and that message did go through. Of course then their response is that this has to be a problem with the third-party app meaning Mozilla Thunderbird, and they can’t help with that at all. I sure would appreciate some help because I hate to walk away from Thunderbird as well as change my email address after all of these decades.

I'm dealing with a properly updated 'bird: 140.5.0 (32-bit) running on an equally updated Windows 10 desktop. First thing this morning, out of nowhere, I started getting an "unable to write the email to the mailbox..." message when sending, thus I could send but not save. And then I realized I wasn't receiving either, on all three accounts in my Thunderbird. I stopped everything and focused on trying to fix this. It's been an all-day, losing effort. So far.

I tried the various quick checks and fixes recommended here and there: I'm running the program as an administrator. I restarted the program. I rebooted the computer. I think I have enough disk space, but to be sure I deleted some bloat from possibly overly large files. I compacted, even though the program is configured to do that regularly. I temporarily disabled my antivirus program. I went into my webmail and deleted all messages that have arrived since my Thunderbird stopped receiving, in case one of them was corrupted. And probably some other attempts as well. Nothing has helped.

And now a second, even worse issue has fallen from the sky. Thunderbird opens. The folder list is where it always has been. The number of unopened messages in each folder is there in boldface, as always, but...the folders are all blank and I get the dreaded popup: "unable to open the summary file...." Have I lost my years' worth of carefully curated emails?

I've tried folder repair. I've deleted parent.lock. Etc. Nothing. Nothing. Nothing.

I will be super-grateful for any wisdom sent my way.

Hello all,

Thank you for Thunderbird mobile!

I get a message not sent error when doing the following on Android smartphone: - click an email address link - create email opens - send completed email

Expected result: Email goes to outbox and is removed after sending

Actual result: - email stays in outbox and error cannot send is displayed - when moving email to Entwürfe and send again the sending succeeds, but email is present twice in sent folder

Please have a look!

Best regards Gerrit

Can not send emails through RoadRunner Mozilla Thunderbird. Can receive. Can send in Spectrum.net, so email account is working properly. Can send and receive with android phone, just not Mozilla. Can not check for latest updates.

I believe I found a bug. When drafting an email and switching away from Thunderbird the draft email gets sent but still remains in the drafts folder.

I created two emails today and had to switch away multiple times to get some information to paste into the emails. Thunderbird evidently sent out the draft in its current format whenever I switched away from the app.

I was able to access my Yahoo email with Thunderbird by using the OAuth2 authentication method. However, I am not able to send a email using the yahoo outgoing server. There is no selection for OAuth2 for the outgoing server. I get the message "The message could not be sent because connecting to Outgoing server (SMTP) yahoo failed." What do I need to do to be able to send email via yahoo?

I cannot set up my icloud email in Thunderbird.

Error implies that the password is incorrect but i know it's correct, i am able to sign in to webmail using it just to prove a point.

"Unable to log in at server. Probably wrong configuration, username or password"

I have verified server info on apple support and verified username and password is what i use on all other devices. Username and password also works on MS outlook.

I have been using our work Mozilla Thunderbird account for two years and in all that time we have been unable to send emails from our usual email address (sales@freunduk.com) to anyone with a Gmail account. We get no bouncebacks and no indication to say that the email has not been received. Everyone else with other types of email account such as Hotmail or Outlook etc get our emails, but for some reason Gmail is blocked. We send invoices, quotes etc from Mozilla and for anyone with a Gmail account, not receiving our email is very inconvenient. We have put customers on stop for non payment and then realised they haven't received our invoice via email because they have a Gmail address. Can anyone shed any light on the matter please? Is there a setting we are missing which needs changing? I have tried to search previous questions on the forum but nothing has been obvious. All help appreciated.

mon compte [edited]@numericable ne peut plus recevoir de message. on me demande le mot de passe de pop.numericable. Sur les paramètres de sécurité j'ai SSL/TLS et authentification "mot de passe normal". je ne sais pas comment faire pour retrouver ma situation fonctionnelle. Merci de votre aide. Envoyer vos réponse sur mon autre adresse mail [edited]@gmail.com ou un sms au 0033[edited]

Hallo,

ich komme seit Sonntag nicht mehr an meine Mails. Kein Abruf möglich obwohl richtges Passwort eingegeben wurde.

[edited]@alice-dsl.net

diese Adresse benutze ich schon seit über 20 Jahren.

Bitte dringen um Hilfe.

Mit freundlichen Grüßen Thomas Höppner

I have Mozilla Thunderbird email application with Windows 11. Recently I have problems opening some email texts, but not all. I do receive the mails and heading, but the contents are not displayed. This goes for some mails, and I do not see any connection as to which ones open and which ones don't. I would appreciate your advise. Bo Dahlberg

Hello - I suddenly cannot send or receive emails in Mozilla - if I go online and do it via the Spark App, it is working, so not my server.

Your advice please?

v147.0.1 (64bit) = latest I create a template. Template used by "send a new e-mail from template" works fine and send with text and pictures. All Good.

I use a Filter that sends an auto-reply from a Template. Sent message have wrong coding (Poland chars are replace to some strange characters) and no picture in it, at bottom of e-mail are some codes.

Seams of BUG in Thunderbird, a many years ago was z bugzilla for Mozilla products, now I found only that forum.

Hello everybody. Since today or yesterday, my Thunderbird has stopped refreshing the list of messages. The number of new/unread messages in the Inbox and other folders is shown and updated right but the main window with the list of the messages does not get refreshed and only shows the last message from couple days ago.

I've tried to follow a bunch of guides and ideas (repairing folder, deleting .msf files...) and even removed the account and tried adding it again. The list of folders is right but now there are no messages at all. All folders look empty.

I've found out that in the folder on the disc where there are supposed to be the "INBOX.msf" and "INBOX" files, that the "INBOX" file without the file type is missing. And it's the same with every message folder, there are only .msf files on my PC where I removed and re-added the account. On my laptop, the "INBOX" file still exists but does not get updated.

This thing is happening with only one of my e-mail accounts, the others get updated fine and new messages are shown. It is IMAP server, imap.atlas.cz, Port 993, SSL/TLS with a password.

Can anyone help please?

None of the hekp found answers the questiin. Any sent email do not show in the folder. There seems to be no route to repair or otherwise corect the issue. Please advise with current accurate guidance

I am unable to send emails from Thunderbird. Getting the message: An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: Connection from xx.xxx.xx.xxx refused.

When I check my password under "Tools - Security', I only see a password listing for my 'incoming' server [that I do not have a problem with].

My out-going server setup has "Authentication" as normal password. When I try to send an email, Thunderbird does not ask for a password. Is it possible the error message refers to lack of a password? If so, is there anyway to manually add an STMP password to Thunderbird?