Due to the imminent demise of WLM and the very inadequate W10 Mail client, I decided to install T/B. I have set up all of my email accounts using the IMAP option and customised the accounts to include folders and sub-folders to make managing my emails much more convenient, this I found very user friendly and I am impressed with the result. My problem is as follows:- I use MailStore Home v9.8.2? to archive my emails and I have found that during this process when using the T/B option within MSH the emails are in fact imported but the actual folders/sub-folders structure in each account are not showing in the resultant T/B archive's. There is an option in MSH to add accounts/folders/sub-folders to the default T/B option but they appear all greyed out and not selectable. I have contacted MSH support and here are their comments:- Hello! Sorry to hear you're having issues with MailStore Home, a couple things to check, first, could you please verify that you're running MailStore Home 9.8, and if not, please upgrade to the latest version and try again? Next, in Thunderbird, go to the Menu --> Options --> Account Settings, find the account you want to archive/export messages into and look at Server Settings (or if it's "Local Folders", just look in the Local Folders settings), look for a setting that reads "Message Store Type". Note that it will be grey, you cannot change it, but can you tell me the current setting, does it read "File per folder (mbox)" or "File per message (maildir)"? Finally, let me know if the account is an IMAP account, POP3 account, or Local Folders? If the accounts are IMAP, that is likely the underlying cause. In this case, please archive the IMAP accounts directly, don't attempt to archive IMAP accounts via another mail client as Thunderbird will not necessarily have a full copy of your mailbox on disk and therefore MailStore will not see all messages in the underlying account. As this is a confusing to me, can you please look into this and help resolve this issue. Thank you David