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Continuation of my prior post: https://support.mozilla.org/en-US/questions/1516342

Thunderbird has a routine problem with being unable to log into various mail servers. I have four accounts and they all seem to share this problem.

Most recent update: I've tested this in Windows Safe Mode, and the problem has not appeared. Since I can't do any useful work in Safe Mode, it's hard to give it a thorough test, but so far so good. Also, I have removed AVG antivirus because it was redundant. I have seen no improvement since it was removed.

Can this problem be resolved?

I have used Thunderbird on my desktop PC for many years, and have now installed it on a Lenovo tablet running Android. The setting up was simple (thank you), and I am receiving emails with no problem. I have tried sending emails and they are simple to type up, but there is no visible "Send" button. I have accidentally sent an email successfully, but have no idea of how this came about. Please help me to send emails, as I am very keen to use the tablet fully. Many thanks, Nigel Olliver.

Hello, I just moved my email host from Microsoft to Bluehost and I am having trouble getting Thunderbird set up correctly. I can send and receive from Bluehost webmail, and I can receive in Thunderbird, but not send. I can reply successfully, but all sent mail from Thunderbird shows as sent but never arrives.

I am running Windows 10 and using Thunderbird 140.7.1esr

Any help would be great. Thank you!

John

j'ai ajouté à thunderbird mon compte de messagerie infomaniak . l'intégration s'est faite correctement, mais je ne peux pas envoyer de mail à partir de thunderbird infomaniak sauf si je remplace le serveur sortant mail.infomaniak.com par smtp.gmail.com. quelqu'un sait ce qu'il se passe?

I am using T-bird on a Mac. I set up for a gmail account. I can send emails but do not receive replies, etc. I noticed there is no mail inbox for the account. Settings appear correct. Any thoughts? Thank you.

Hi there

I have a desktop, a laptop, and a cell phone. If I have the application installed on these devices, and setup my email account (POP3 protocol), can I have the application setup such that they are synchronized in any ways?

e.g. if I send an email from the Desktop, will it appear in the Sent folder in other devices? e.g. if I receive an email from the mobile app, will it appear in the Inbox in other devices?

I ask because I do not see that but I do not know if it is a problem with my settings.

Thanks Jason

Have been using Thunderbird on my laptop. Comcsst just changed their email system to yahoo email. I have followed instructions and changed it on my IPhone. When I did that my Thunderbird on my laptop no longer works. What do I need to do? I have used this forum before and know that the responses will be very helpful.and therefore I will express my thanks and appreciation beforehand. Thank you

So, from time to time I need to find a sent email, it is not in my sent folder, I check my settings and there it is, I then set it to use my sent folder on the IMAP server, this works for a while, but then seems the next time I want to find something in the sent folder it has reverted back. Any Thoughts?

Hi, I'm a new user. I cannot send email. Receive is ok.

I get this prompt: Password required for outgoing (SMTP) Server mailhost.zen.co.uk So I add the password, but then I get this error: Login to server mailhost.zen.co.uk with username zen53214 failed. Retry - Enter new password - Cancel I add a new password (the one I use on the zen webmail portal) and I get this message: Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) AUTH command not available at this time. Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'. The outgoing server setup is the following: Description: zen53214 Server name: mailhost.zen.co.uk Port: 857 Connection security: STARTTLS Authentication method: Normal Password User name: zen53214

There is a sync issue with zen email password but I cannot change it on the zen portal, because the password in ThunderBird doesn't have a special character and Zen will not let me change the existing password to one that doesn't have a special character.

What can I do to resolve? Please help. I'd like to stay with ThunderBird email.

Thanks!

Mit meinem e-Mail Konto .gmx.de kann ich keine eingegangenen Mails mehr weiterleiten und auch keine neuen Nachrichten mehr versenden. Nach dem Betätigen "Senden" kommt immer der Hinweis "Postausgangsserver SMTP kann nicht authentifiziert werden.Überürüfe Passwort und gewählte Authentifiziermethode unter Kontoeistellungen " .Ich habe aber nichts verändert und weiß nicht was ich in Einstellungen überprüfen soll oder ändern soll.

I have three email accounts all from different sources.

Two of the three accounts work fine but one account will give me this error message. I back up the Thunderbird folder every week and copied the backup to the working folder and I still have the issue.

I've been getting multiple emails of the same in a few folders. I do have a lot of Filters set up for the account affected.

I recently downloaded Thunderbird. (I used Thunderbird in my older computer. It was fine) Now I can receive post (<edited>@internet.is) but I can´t send post. Why is that?

Gísli Steinar Sighvatsson

My name is graeme , my wife Olivia.

I have many many messages from various people; if I reply to a a mail from "fred", Thunderbird creates a mail:

to: fred@xxxx from: graeme@xxxx

I have several messages from my wife , that behave in this same fashion (ie , as you would expect) but ONE message, when I reply the message displayed in Thunderbird (ie NOT YET SENT, so no SMTP etc yet involved) says:

(it does NOT have a REPLY-TO header BTW)

to: graeme@... from olivia@.....

...I've search back though my mailbox and all the mails from my wife work as you would expect, bar this one ...AND ONE OTHER that I found:

This says:

from olivia@.xxxx to: company@xxxx, olivia@xxxx. graeme@xxxxx

When I hit reply , it generates a message:

from olivia@xxxx to: company@xxxx, olivia@xxxx. graeme@xxxxx

So the from and to in the reply are exactly the same as the from/to in the initial message (they are not swapped)

So, to be clear 99% of messages are fine, it's just one or two cases where I get this odd behavior.

Since last night, I sometimes get failure to connect to SMTP Server. This happens not always, but frequently. I'm using 0AUTH 2.0.

It only happens when I try to send s.th. Receiving is ok.

Did anyone else experience this and is there a remedy?

Thanks in advane