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During certain hours only, emails do not arrive in inbox that do arrive on my other devices.

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During overnight hours, emails do not arrive in my Thunderbird account on my computer that do arrive on my phone. I sent a test message at 1:43am which arrived in my phone's Tbird account, but did not appear on my computer. I recently upgraded from Windows 7 to 10.

During overnight hours, emails do not arrive in my Thunderbird account on my computer that do arrive on my phone. I sent a test message at 1:43am which arrived in my phone's Tbird account, but did not appear on my computer. I recently upgraded from Windows 7 to 10.

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Is your phone receiving the messages via the same network as your computer?