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Good afternoon, Since yesterday, I have been having a problem where new messages can no longer be previewed or opened. Emails can be sent, but they do not appear in the sent items folder. Everything works fine on my Samsung smartphone with the Samsung app.

Kind regards and many thanks, Marcel

Trying to send mailmerge. Thunderbird version 147.0.2 (64-bit) I have sent a mailmerge from thunderbird before, so it should work. I have my CSV ready, and I type the email draft. I click the mailmerge icon, and fill out the mail merge dialogue box. After I fill out Mail Merge dialog box and click send, a blank dialog box opens, then I can't do anything (my email draft is frozen)tried sending, and saving, or pressing load (all options highlighted in screenshot). See also screenshot of blank dialogue box and frozen message. I tried closing the blank dialogue box, but the mailmerge is not sent, and after that, I can create a new message, but the mail merge option is greyed out, so I cannot select it. So I shut down Thunderbird and restart, then I can click the mail mergeicon,but same problem,I only get as far as the blank dialogue box. Thank you so much for your help

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.

Hello, I only use Thunderbird on my PC with IMAP. For the past three days, while I receive my emails just fine, I can no longer send them. They bounce back with the following error message:

The only thing I've done is also install Thunderbird on my mobile phone. It asked me for a password that I don't know and don't think I've ever had one for Thunderbird.

However, when I go directly to the Free Zimbra website associated with my email, it works and I can send my emails. Thank you for your help.

Christian - Error message attached.

1. Was able to receive emails sent to my address xxxxxx@xxxxxxx.free-online.co.uk, but unable to SEND my replies. Was getting this notification: 'Send message error. Sending of message failed. An error occurred while sending mail. The mail server responded: Unknown sender. Please verify that your email address is correct in your account settings and try again, OK' (see attached). 2. Checked all settings, all correct as used to be before the problem started. 3. At some stage, I tried changing the password in Settings > Privacy & Security > Passwords > Saved passwords > Saved logins to see if that helped. It didn't. 4. I removed the free-online Server from the Saved logins (Provider: smtp://relay.free-online.net, User: xxxxxxx) with the intention of restoring it with a new password - but found I couldn't restore the free-online server. So I decided the best thing to do was to restore the password as it was before and to ask for help here. >>> That line has now been restored.

NB1. Free-online is a sub section of Plusnet. NB2. Last year I received an email from Greenby saying something about maybe taking over from Plusnet and that I would be notified if and when I had to do anything. I have not received any such instructions so left things as they were. Many thanks for your help from a not-very-techy so stressed old lady.

My Thunderbird email account no longer lets me send out messages. I get a message error

  QUOTE____

Sending of message failed. An error occurred while sending mail. The mail server has responded. Message contains bare CR and is violating 822.bis section 2.3. Please check the message and try again.

But I am able to receive messages.

Can anyone help. Thanks in advance!!

My Thunderbird hasn't downloaded emails to my main/default address since mid January. The other two addresses, with all the same settings, and with the same provider, work. Emails are goint to my web mail. I've spent hours on support and on remote control with my provider, and they finally said maybe it's a thunderbird problem. I deleted the programme and reinstalled it, still won't download and all the emails are still missing from my inbox. The emails went missing when I attempted to repair the folders earlier in the saga.. All my local folders are there. I may have to start all over again from a new programme. Thank goodness I can access all emails from my provider's web portal. Aussiebroadband.

Hello,

I'm trying to setup a new GMX email address in Thunderbird. I can receive messages, but when I try sending an email, I get stuck on the loading bar "sending message". I receive no error message.

I have multiple GMX addresses in Thunderbird already, all work well for receiving and sending emails. I tried writing to email addresses with different providers, the result is always the same.

I tried adding the IMAP info manually and automatically in Thunderbird, nothing changes. Here is my current SMTP server :

mail.gmx.com Port 465 SSL/TLS Normal password

Can someone please help me figure out this SMTP setup ?

Thanks ! Alix

I have a wordpress website and from time to time the emails in my TB 'inbox' will disappear and appear in my website as posts. My wordpress email used to be the same email but I have changed it and the problem still persists.

my server is charter.net never had a problem with thunderbird and then several months ago i stopped being able to reply to emails

Something horrible and time-consuming has changed within this past week to Thunderbird. My version is 140.7 1esr 64bit. Over the past 4 days or so, I've found I cannot scroll down and see the full emails--until I have to use this new pop-up system.

This is definitely not an improvement in my estimation. Is there any way to undo this?

I now have 2 accounts in Thunderbird: Local (which has years of folders, but stopped receiving email from my Web mail provider) and my webmail Provider that does not download it from the provider. He claimed it is more modern and safer to synchronize across all devices and keep stuff on the web Mail application. I prefer to keep all my folders and emails on my local computer. Should I use POP? iMAP? to do that? Thanks for your assistance?'

I have been using Thunderbird for many years. I just got a new computer and installed Thunderbird onto it. I have several email accounts for personal, business and clubs so this makes it easy to keep track of. I have some gmail accounts and 3 different yahoo accounts. Now when I get an email to one yahoo account it prorogates to the other two. This never happened on the old computer do you have any idea how this happened, and more importantly, how do I stop it?

My address appears in From field when mail comes from someone else. Error message at the bottom says, "A unique identity matching the From Address was not found. The message will be sent using the current From field"

Re: Thunderbird

I have logged in on my mobile and a secondary laptop - however the folders on the primary device are not reflected; how can I get them to sync?

Thank you

I have just installed Norton 360 but am not able to receive emails. I followed all the steps as outlined in the Norton help site as much as possible and Thunderbird tells me that wscert.der is installed. However it was all to no avail. When doing so I did not see the screen asking me to trust this CA to identify web sites but every other step seemed OK.

Looking carefully at your documented instructions I have every setting correct except in the outgoing SMTP server I can select connection security to STARTTLS but i do not have the option available for OAuth2 in the drop down list for Authentication?? What do I do as I have updated Thunderbird to the most recent available for my 32 bit version of Linux which is 68.10.0 which it appears cannot connect to my Hotmail mail service. I do have OAuth2 available on server settings strangely enough but not in outgoing SMTP server settings.