View (Alt-V) - Sort By - Threaded

Preview example in the attachment.

Like I said this happens only for some e-mails. My only suppose is that user creates a new message instead of replying to the original one. If they are using an application for tickets registration and monitoring of their status, then it's possible that this app creates a new e-mail because it doesn't have a reference to the original one. If you don't have another suggestion, then don't spend too much time with it.

There is this add-on which tries to reproduce the gmail experience.

https://addons.mozilla.org/en-US/thunderbird/addon/gmail-conversation-view/

I get threading of a conversation by moving associated messages and their replies into the same folder.

There is also Message|Open In Conversation, accessible via the menu or by right-click.

I have a lot of messages from/to technical support for companies I am working with. I synchronize my POP3 e-mail work account through Gmail. So I have all my e-mails with me anywhere. I don't consider this is a good method to create a folder in Gmail for each group of e-mails (conversation) just to have them all together. That add-on doesn't do anything new that TB already supports. I thought it will search and group all messages with the same subject. The content and UI is messed. I like the TB original UI. It's very well organized. Anyway, Thanks for suggestions!

OkVasile Eftodii said

I have a lot of messages from/to technical support for companies I am working with. I synchronize my POP3 e-mail work account through Gmail. So I have all my e-mails with me anywhere.

lets just be clear, pop3 does not synchronise. It downloads the inbox. While this might appear similar, it is not synchronisation. For instance if you send an email using the web interface it will never get to Thunderbird.

I don't consider this is a good method to create a folder in Gmail for each group of e-mails (conversation) just to have them all together. That add-on doesn't do anything new that TB already supports. I thought it will search and group all messages with the same subject.

The add-on will mimic the Gmail method of merging mails in a thread, where those email are available in thunderbird to be merged.

I wanted to say I have set my Gmail e-mail to collect e-mails from a POP3 account. In Thunderbird, I use this Gmail account. So it doesn't matter if I wrote a new mail from TB or using Gmail web interface. It will by default send e-mails from that POP3 e-mail address. Now, that's not so important for this case. That add-on can show as a conversation the same messages which TB already sees as a thread. He can not group more messages together like Gmail web interface does. This can be seen in my previous image attachment.

Emails can be set as threaded if the emails are of same conversation. As you correctly stated, all people in the conversation would need to use the 'Reply' method and not create a new email to reply as that would be considered a different conversation.

Perhaps you may be looking for a way to edit the eg: subject to get that email back into a thread. I located some info for you to try:

• https://addons.mozilla.org/en-US/thunderbird/addon/edit-email-subject/
• http://totalmessage.mozdev.org/

General info which may help:

• https://github.com/protz/thunderbird-conversations/wiki/What-is-threading
• https://wiki.mozilla.org/MailNews:Message_Threading
• http://kb.mozillazine.org/Stop_threading_by_subject