You do not need to exit Thunderbird before editing this file. Ensure that the editor you use saves the file as plain text, not in any wordprocessing format. You can edit the file using any text editor. The message's time stamp in the file corresponds to the date and time in the From - line at the top of the message source.If a message has no UIDL, then it normally does not exist on the server because when Thunderbird downloaded the message, it immediately deleted the server's copy.If you plan to download a message from the server again, delete the original message in Thunderbird, to avoid duplicate messages.You note the value APaxktkAACMqRZj0Jw8jZj元J7E (but in most cases you only need to note the last few characters. (In most cases you only need to note the last few characters.)Įxample: The message headers look like this: Look for the X-UIDL header near the top of the message source.From the menu bar, choose View – Message Source (or press Ctrl-U).Select the message in any of the account's folders-for example, the Inbox.Thunderbird uses the time stamp to decide when to delete old messages from the server, if you have specified that in the account settings. Note: The file also contains a time stamp for each message, in a numeric format. You can change the message states manually, as described in the next section. However, if you remove a message from the file and it does exist on the server, then Thunderbird will download the message again. This normally means that the message has been downloaded and deleted from the POP server. When a message does not appear in the file at all, then its state is unspecified. Each state specifies what Thunderbird will do with the message the next time it gets mail from the POP server. The file identifies a state for each message that Thunderbird has downloaded and left on the POP server.

Mozilla thunderbird download trash