could you please add the ability to not include the time zone.
Where is the timezone shown in the user interface ? If you're talking about the "show details" feature, then it's just showing the raw contents of the header sent by your correspondant; the addon has no control over this.
it's show the time zone abbreviated like "CET", if i reply. it's in the message, not the interface. the interface wouldn't be a problem.
replying vanilla, just shows the time.
I believe the latest version from https://addons.mozilla.org/en-US/thunderbird/addon/54035/versions/ fixes this.