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Oer dizze add-on

Adds a Preview Button, toggles the message preview

Ferzje-ynformaasje

Ferzje 2.0 Utjûn op Feb. 21, 2026 4.3 KiB Wurket mei Thunderbird 128.0 en heger

Switched to manifest version 3.
Removed experiments.
Removed maximum version.
Set minimum version to Thunderbird 128.0.

Boarnekoade útjûn ûnder GNU General Public License, version 3.0

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