Forum der Gemeinschaft Thunderbird

I cannot receive mail from my Outlook.com account in Thunderbird. This does not appear to be a Thunderbird configuration problem.

Thunderbird 159.0 on Windows. IMAP: outlook.office365.com, port 993, SSL/TLS, OAuth2, username = full address SMTP: smtp.office365.com, port 587, STARTTLS, OAuth2, username = full address

The Microsoft sign-in window completes successfully and an OAuth2 token is issued and stored. Using the same token: 1. SMTP AUTH XOAUTH2 succeeds: 235 2.7.0 Authentication successful 2. IMAP AUTHENTICATE XOAUTH2 fails: NO User is authenticated but not connected. 3. POP3 AUTH XOAUTH2 fails with an authentication/protocol error

I also reproduced the IMAP failure with a raw IMAP connection, outside Thunderbird. A brand-new Thunderbird profile still fails for this Outlook.com account; a Gmail account in the same profile works normally. Thunderbird is up to date.

Outlook on the web works. IMAP is enabled in Outlook.com settings (toggled off and back on). The same IMAP failure happens on two different networks.

I have already contacted official Outlook.com support. They said IMAP is outside their scope as long as Outlook.com works in the browser, and directed me to Feedback Hub.

Is there any Thunderbird-side workaround, or any known Outlook.com IMAP OAuth2 bind issue and recommended next step?

I love TB and I've been using it for a long time, but it has 1 very annoying habit. The Calendar reminders window repeatedly comes to the foreground and takes keyboard focus. It happens frequently and most annoyingly while I’m while I’m composing an email.

The interruptions happen too frequently. Is there a way to prevent to reminders window from coming to the foreground or at least reduce the frequency?

I'm using TB 153.5.1esr (64-bit) on Windows, but this has been occurring for years. I can't believe others aren't experiencing the same annoying behavior.

In TB prior to v.155, folder message counts were not shown at all if the respective folders were empty. That is, instead of showing "0", TB did not show anything.

Now, after updating to TB v.155.0.1, I see dashes (horizontal lines) in the folder tree to the right of each empty folder.

Is it possible to revert back to the original behaviour and get rid of those unsightly dashes? They only add visual clutter (my opinion, obviously) while not providing any extra information.

Thanks.

Have used Thunderbird for years and never had this issue before. Just upgraded to Thunderbird 115.18.0 esr and my calendar is now blank. Did the upgrade erase the data or is a pointer off somewhere? Can I get my calendar back?

Добрый день.

При пересылке полученного письма с вложениями от абонента (у абонента почтовый клиент от компании 1С) вложения исчезают. Выяснили, что когда письмо отправляется из 1С "Content-Type: multipart/mixed" , Thunderbird не распознает данный параметр и поэтому удаляет вложения.

Подскажите, какие настройки сделать в почтовом клиенте, чтобы вложения не пропадали?

С уважением, Дмитрий

Hello. I have been unable to send email from one of several POP accounts on Thunderbird (v 115.18.0). I believe this occurred after Network Solutions changed the SMTP server for that email account. I am able to send email from my Gmail IMAP account setup on the same Thunderbird program on my PC. I have tried all the port and authentication settings for SLS/TLS and STARTTLS, changed/updated passwords, etc. I do not get any error messages, just never receive the test email I send to my other accounts. I updated the SMTP server on my iPhone mail app to the new NetSol SMTP and it works on that platform. I just cannot get it to work on Thunderbird on my PC. NetSol support said to delete account and start over which is not possible as it is my business email account. Also, the inbox is too large to back-up to an external drive. Any suggestions? Thanks in advance. John

Hi, I paid £7 donation in order to be able to download Thunderbird on my desktop but I couldn't set up my email account and hence I would like a refund. the email account I was trying to set up is [edited] @radorris.com which is on dynadot host.

Needed to ire install thunderbird email and could not get past the "donation" page Paid a "donation" and still cannot get past the donation page The release channel button did nothing Am thinking the donation is a scam How Can I use thunderbird for emails Margaret

I bought Thunderbird because Gmail kept telling me I reached my 15gb limit. I thought I could transfer my emails to my local hard drive thereby freeing up my Gmail account. Now Thunderbird is saying I have reached my limit as well. Is there a limit on transferring emails to your hard drive? What am I doing wrong?

When I try to delete mail from Deleted folder (even if there is just 1 email), the thuderbird gets unresponsive. Same when i try to select few emails (headers) for deletion or moving to another folder. Running on Windows 11

I have made no changes to the PC or mail midway through the day it suddenly said input password, the password is correct, but I get incorrect password message. The password works using browser mode.

Some months ago I received an email, but the body of the email was a picture (jpg) from my computer. The sender definitely does not have the image. The content from the sender is missing, and my image is in the body of the email and as an attachment.

This has happened a handful of times over the past 6-9 months, with the same image showing up in emails from various unrelated senders.

I just received an email from my partner who sent me an email with a screenshot attached, but instead of receiving what he sent, I've got an email with my image that randomly shows up in my inbox.

A few days ago it happened, but when I restarted my computer, the unwanted image was no longer present, and the actual email content was visible.

Restarting my computer has not resolved this particular instance.

Does anyone know why Thunderbird is in love with this one image of mine and why it keeps showing up in my inbox in emails from other people?