@youronlyone
Why do you say "email provider"? It clearly states "email client". Well, if you use Gmail etc, it's more likely that tracking is "allowed".
If you get this kind of mail and you do use their services, then it could prove that the tracking does not work (or at least not correctly).
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C. Metscher (c_m78@mstdn.jp)'s status on Monday, 24-Jun-2024 05:22:22 JSTC. Metscher