Thunderbird Support Forum

Thunderbird Version 115.10.1 on Windows 10

I wrote my own POP3 server and it largely seems to work apart from when Thunderbird tries to RETR the email messages at which point I get the error "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox.".

If I drag a saved version of that same email that fails to be retrieved into Thunderbird , it can write it to the Inbox without issue. That means Thunderbird has permission to write to the Inbox file and so it is not a permission issue and there is enough space. I feel like it is more likely to be something I am doing wrong in my protocol implementation. For example, could I get this error if I misrepresented the octet count? Also I notice that even though my CAPA reply does not include UIDL, Thunderbird still seems to send that request and should get the response "-ERR Unknown command".

Output from my server showing what Thunderbird sent to it: CAPA USER person@mydomain.com PASS XXXXX STAT LIST UIDL RETR 1 QUIT

Any help is much appreciated, even if it is guidance on how I can debug it more thoroughly.

Thanks.

(TLDR; Questions in bold at the bottom)

I currently have just a desktop Mac. I recently switched from Apple Mail to Thunderbird to read three email accounts: iCloud, gmail & a university account. I had previously used rules at the server level on my iCloud account, and this caused hella pain during the migration, including some zombie rules that I think I have isolated to Thunderbird. I deleted the rules from iCloud, removed the iCloud account from Thunderbird, restarted and then re-added it to Thunderbird. So far, so good, although I had to resubscribe to the draft, junk and trash folders (all other than the inbox) for some reason.

I have decided to experiment with not using rules or folders at all, and instead use local saved searches in Thunderbird. This will make my life easier when I get a laptop, which is inevitable. Two machines reading the same IMAP emails with rules can get weird.

Can I copy/paste existing saved search folders, so I can do similar searches just by making minor changes to the search terms? If so, how?

Can I copy/paste or save saved search folders, so I can do the same searches on a different Mac, without painstakingly recreating all the search terms? If so, how?

Can I create a saved search folder that contains all the messages not found in any OTHER saved search folder? If so, how?

Until recently when a spam email was received, I could go to my Message Filters and one set up as DELETE. After entering the spam email address I could then select RUN NOW and the spam email would be deleted. When I click RUN NOW at present nothing happens. How can I get this filter to work again.

All of a sudden, over 6 months of my "deleted" items dropped off. I like to keep up to 9 months items for history reference if needed. Is this an automatic thing, or if, can it be adjusted by settings?

Hello. I have my outlook.com account set up in Thunderbird 115.10.1. When I delete emails in Thunderbird from my inbox, they disappear and they go to the Deleted folder in Thunderbird as they should, but they aren't deleted on the Outlook server. I can still see them in my inbox if I use my Outlook app on my phone. I must delete them using my phone.

If I delete an email on my Outlook app on my phone, they disappear immediately in Thunderbird, which is correct. In other words, it works correctly if I delete from my phone, but not from Thunderbird.

My server settings are: Server Type: IMAP Mail Server Server Name: outlook.office365.com Port: 993 Connection security: SSL/TLS Authentication method: OAuth2 When I delete a message: Move it to this folder: Deleted on <myaccount>@outlook.com

Can anyone help? Thanks!

Hello My Thunderbird failed pop access to my Gmail account, at beginning of month. Any try to fix, and even change from pop to imap don't work. I get the windows as shown i images as result. I don't like see oauth/legacy/consent in the URL. - Change setting in Google from pop to imap - Cookie setting updated as forum suggest - JavaScript true as forum suggest

Any hint on forwarding step? Thanks Lars Granath

'just added 2nd gmail address to Thunderbird. Suddenly getting verification requests. I go through that process then asked for phone # for verification code only to be told the number already used too many times . Now what?

Already invested time creating some html code for email signature on thunderbird. Wanted to create something prepared for dark modes on IOS. Everything was fine until I detected on IOS (dark mode)some white rectangles outside my email signature code. It´s a problem that I cannot solve because it´s outside my code, and I´m wondering if you are already aware of this issue.

In case you want to test my code on a Thunderbird HTML email signature and see the result on an iPhone (dar mode), you can get it here: https://codeshare.io/dekBnR