I receive monthly emails from the same source but thunderbird will not let me file them because an email with the same address already exist (of course, it comes from the same source, how else can I file it?)
I receive monthly emails from the same source but thunderbird will not let me file them because an email with the same address already exist (of course, it comes from the same source, how else can I file it?)
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Duplicated here https://support.mozilla.org/en-US/questions/1450470