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So de-activating the account would be just as well as deleting it, if possible. I tried as a hack to just empty the box for "Server Name" but Thunderbird does not accept an empty box there. They must not be mixed or stored under another account. I am willing to do all the needed work, even manual clicking-party, like archiving all mails, if I find a way to keep them separate from all other accounts and keep their structure intact. The setup is such that under "Copies & Folders" the "sent" and "archives" and "drafts" and "templates" are each stored under their respective folder under have searched through Mozilla Thunderbird online help on how to remove an account while keeping mails and did not find any entry. Since this is part of my production machine, I cannot just do some tests through guesswork. I need to keep those for several years for legal reasons. Now I am afraid that if I just select the corresponding account in Thunderbird and go "Account Actions" > "Remove Account" it might delete all the e-mails which came through this account over the years. Presently running Thunderbird 68.8.0 on Win 10 Pro 64bit with all updates. The Thunderbird setup is running 20+ accounts, so any solution needs to be account specific and needs to include a reasonable method on how to still access all e-mails. For example It was configured in TB as a POP account, and outgoing as SMTP. If you have set up additional identities for an email account, the archiving location and folder structure can be configured separately for each identity.We cancelled an account with a server provider and of course lost some e-mail addresses.
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Then you can choose if you want to use a single folder for all your archives, or define some sub-folders, as indicated in the animation below: You can define the structure of the archive folder by clicking the Archive options. In the Message Archives section, use the settings in Keep message archives in to set the desired location. In Tools Edit > Account Settings, select the desired email account in the left panel, and then select the Copies & Folders setting. The location of archived messages can be configured individually for each email account. How do I configure archiving? Configure archive location It is recommended that you not select more than 2,000 messages at a time. To archive one or more messages, select the desired messages and then click on the Archive button, or simply press A on your keyboard. Archived messages are indexed by Thunderbird's search. Messages can only be archived manually, not automatically. This makes it easy to organize archives or move them to a backup device, and keep the Inbox clean. Thunderbird provides the ability to archive messages - that is, to move them from the default folders to archive folders without deleting the messages altogether.
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