CentOS 7.x Thunderbird emails not visible in folders but visible in search results
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They might have been moved. Repair both source and destination folders. If you do not remember moving them then simply repair folder (eg Inbox) where you expected to find the email.
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Home > CentOS > CentOS 7.x > Desktop tools or applications > CentOS 7.x Thunderbird > CentOS 7.x Thunderbird emails not visible in folders but visible in search results