Today 2023-02-05 at 14:30, I received a message M on my gmail account: I was able to spot it thanks to my Android gmail app, because Thunderbird on my desktop has a weird way of ordering messages. These are the headers of the message: '''Received: [cut] by mx.google.com with [cut] <[my_email]> [cut]; Sun, 05 Feb 2023 05:20:12 -0800 (PST) '''[...] '''Date: Thu, 18 Nov 2021 18:27:06 +0100 '''Subject: 1 Sent in 2021 (strange but not impossible), received today. But Thunderbird does not care about the date "received": it simply looks at the date it was sent on. Have a look at the following two screenshots: [[Image:On the gmail website]] gmail shows the message as received today, respecting the headers [[Image:In thunderbird]] For Thunderbird the message was sent and received in 2021. If I sord by "Order received", then I see this: [[Image:wrong order]] Thundebird thinks the message has been received in 2021. However, its number is 119771, showing that it was received after the message number 119768, received and sent today. This is a mess. Is this a bug or I am doing something wrong? Using Thunderbird 102.7.1 (64-bit) on Windows 11