If it is an IMAP account, nothing is lost. highlight the account name in left sidebar, rightclick and select 'subscribe' and you may see the missing folders to tick there.

None of the missing Folders are listed.

Are all the folders IMAP, or are some local folders? You might also check the advanced button in 'server settings' to see if only subscribed folders are shown.

The only Folders listed are those currently shown, none of those originally there ( but in my webmail account) are listed.

How do I import the webmail Folders, originally in Thunderbird, back to the Thunderbird files?

Oops. I think a response to someone else got mixed in here. On your question, what are these 'webmail folders' to import? Is it that you downloaded them?

A bit of a late response, but I had to talk with the ISP person most familiar with their webmail program (called Zimbra). They are clueless with regard to Thunderbird.

Tthe missing folders were originally created in my Thunderbird acciybt which is set up as IMAP. My Zimbra ISP account is IMAP and when the folders were created in Thunderbird they automatically were setup in the Zimbra webmail (I don't understand the process but they are there with all of the messages intact).

I see Thunderbird has an import process for a Becky webmail but my ISP doesn't know what that is.

Would it be feasible to just download the missing folders and then upload them to Thunderbird (not sure how) OR could I possibly try the Becky webmail option in Thunderbird and try to import them from the Zimbra webmail account? I don't know how different the two webmail programs are.

> I had to talk with the ISP person

Who is your provider?

What is the exact process you used to "reinstall Thunderbird"?

The internet provider is Peak Internet. I removed Mozilla Thunderbird using Uninstall under Control Panel. The reason for the Uninstall was a number of problems I was experiencing with Thunderbird after an unanticipted PC shutdown by loss of AC power to the area. I reinstalled from the Mozilla Thunderbird site. The reinstalled version did NOT relist any of the folders I had added over time. The only ones listed were the standard folders. All of the folders I set up on Thunderbird appear and are accessible on the Zimbra webmail account that is set up when you subscribe to Peak. My Peak account is IMAP. I do not know how to 'copy' the webmail folders back into Thunderbird which is my preferred email use. The Zimbra webmail is not easy to use nor does it have all the Thunderbird features.

A bit of a late response, but I had to talk with the ISP person most familiar with their webmail program (called Zimbra). They are clueless with regard to Thunderbird.

I should think a trained tech with zimbra should be familiar with Thunderbird.

The missing folders were originally created in my Thunderbird acciybt which is set up as IMAP. My Zimbra ISP account is IMAP and when the folders were created in Thunderbird they automatically were setup in the Zimbra webmail (I don't understand the process but they are there with all of the messages intact).

This is the way imap works - what exists on your mail server (webmail) is mirrored on your computer and vice versa.

I see Thunderbird has an import process for a Becky webmail but my ISP doesn't know what that is. Would it be feasible to just download the missing folders and then upload them to Thunderbird (not sure how) OR could I possibly try the Becky webmail option in Thunderbird and try to import them from the Zimbra webmail account? I don't know how different the two webmail programs are.

No. Thunderbird's import process depends on using application files which are already on you computer.

Zimbra is not your mail provider. What company is providing your mail?

I know, the company is Peak Internet and I've not found anyone on the staff who knows or will admit they know anything about Thunderbird. The answer is we don't support any mail program but our Zimbra.

Since these are IMAP files/folders there must be a way to copy them and reinsert them into Thunderbird. I'm a user and generally can get around issues, but this one has me flummoxed.